EduSahara™ Assignment
Name : Simultaneous Equations
Chapter : Linear Equations and Simultaneous Linear Equations
Grade : ICSE Grade IX
License : Non Commercial Use
Question 1
1.
    • Solve
    • (
      11
      x
      +
      8
      y
      +
      21
      )
      =
      0
      (
      10
      x
      +
      15
      y
      35
      )
      =
      0
  • (i)
    (
    9
    ,
    7
    )
  • (ii)
    (
    8
    ,
    7
    )
  • (iii)
    (
    7
    ,
    7
    )
  • (iv)
    (
    7
    ,
    6
    )
  • (v)
    (
    7
    ,
    5
    )
Question 2
2.
    • Solve
    • (
      x
      3
      y
      1
      )
      =
      0
      (
      3
      x
      2
      y
      +
      5
      )
      =
      0
  • (i)
    (
    19

    7
    ,
    (
    -6

    5
    )
    )
  • (ii)
    (
    19

    7
    ,
    (
    -10

    7
    )
    )
  • (iii)
    (
    7

    3
    ,
    (
    -6

    5
    )
    )
  • (iv)
    (
    17

    7
    ,
    (
    -8

    7
    )
    )
  • (v)
    (
    7

    3
    ,
    (
    -8

    7
    )
    )
Question 3
3.
    • Solve
    • (
      3
      x
      5
      y
      3
      )
      =
      (
      5
      )
      (
      5
      x
      y
      4
      )
      =
      (
      2
      )
  • (i)
    (
    8

    11
    ,
    8

    9
    )
  • (ii)
    (
    8

    11
    ,
    6

    11
    )
  • (iii)
    (
    6

    13
    ,
    8

    11
    )
  • (iv)
    (
    6

    11
    ,
    8

    11
    )
  • (v)
    (
    6

    13
    ,
    8

    9
    )
Question 4
4.
    • Solve
    • (
      5
      x
      3
      y
      3
      )
      =
      (
      5
      x
      5
      y
      +
      5
      )
      (
      3
      x
      +
      y
      3
      )
      =
      (
      x
      +
      3
      y
      )
  • (i)
    (
    11

    8
    ,
    (
    -23

    8
    )
    )
  • (ii)
    (
    13

    8
    ,
    (
    -19

    6
    )
    )
  • (iii)
    (
    13

    10
    ,
    (
    -19

    6
    )
    )
  • (iv)
    (
    13

    10
    ,
    (
    -23

    8
    )
    )
  • (v)
    (
    13

    8
    ,
    (
    -25

    8
    )
    )
Question 5
5.
    • Solve the following pair of equations :
    •    
       
       
      6

       
       
      x
         
       
       
      12

       
       
      y
      =
       
       
      (
      30
      )
    •  
       
      4

       
       
      x
        +  
       
       
      5

       
       
      y
      =
       
       
      8
  • (i)
    (
    (
    -1

    3
    )
    ,
    (
    -1

    4
    )
    )
  • (ii)
    (
    (
    -1

    3
    )
    ,
    1

    4
    )
  • (iii)
    (
    -1
    ,
    1

    4
    )
  • (iv)
    (
    (
    -1

    3
    )
    ,
    1

    2
    )
Question 6
6.
    • Solve the following pair of equations :
    •  
       
      2
      x
        +  
       
       
      6

       
       
      y
      =
       
       
      (
      12
      )
    •  
       
      9
      x
        +  
       
       
      16

       
       
      y
      =
       
       
      1
  • (i)
    (
    10
    ,
    (
    -1

    5
    )
    )
  • (ii)
    (
    12
    ,
    (
    -1

    5
    )
    )
  • (iii)
    (
    9
    ,
    1

    5
    )
  • (iv)
    (
    9
    ,
    (
    -1

    7
    )
    )
  • (v)
    (
    9
    ,
    (
    -1

    5
    )
    )
Question 7
7.
    • Solve the following pair of equations :
    •  
       
      5

       
       
      x
        +  
       
       
      3
      y
      =
       
       
      41
    •    
       
       
      2

       
       
      x
        +  
       
       
      2
      y
      =
       
       
      (
      10
      )
  • (i)
    (
    1

    7
    ,
    -1
    )
  • (ii)
    (
    1

    7
    ,
    2
    )
  • (iii)
    (
    1

    9
    ,
    2
    )
  • (iv)
    (
    3

    7
    ,
    2
    )
  • (v)
    (
    1

    7
    ,
    1
    )
Question 8
8.
    • Solve the following pair of equations :
    •    
       
       
      8

       
       
      (
      x
      +
      y
      )
        +  
       
       
      13

       
       
      (
      x
      y
      )
      =
       
       
      (
      46
      )
    •    
       
       
      2

       
       
      (
      x
      +
      y
      )
        +  
       
       
      2

       
       
      (
      x
      y
      )
      =
       
       
      (
      14
      )
  • (i)
    (
    11

    36
    ,
    (
    -7

    36
    )
    )
  • (ii)
    (
    11

    36
    ,
    (
    -1

    4
    )
    )
  • (iii)
    (
    11

    38
    ,
    (
    -7

    36
    )
    )
  • (iv)
    (
    11

    36
    ,
    (
    -7

    34
    )
    )
  • (v)
    (
    13

    36
    ,
    (
    -7

    36
    )
    )
Question 9
9.
    • Solve the following pair of equations :
    •    
       
       
      15

       
       
      (
      3
      x
      +
      y
      )
         
       
       
      2

       
       
      (
      3
      x
      y
      )
      =
       
       
      74
    •  
       
      1

       
       
      (
      3
      x
      +
      y
      )
         
       
       
      7

       
       
      (
      3
      x
      y
      )
      =
       
       
      (
      62
      )
  • (i)
    (
    (
    -1

    144
    )
    ,
    (
    -3

    16
    )
    )
  • (ii)
    (
    1

    144
    ,
    (
    -7

    48
    )
    )
  • (iii)
    (
    (
    -1

    144
    )
    ,
    (
    -7

    48
    )
    )
  • (iv)
    (
    (
    -1

    146
    )
    ,
    (
    -7

    48
    )
    )
  • (v)
    (
    (
    -1

    144
    )
    ,
    (
    -7

    46
    )
    )
Question 10
10.
    • Solve the following pair of equations :
    •    
       
       
      2

       
       
      (
      x
      +
      2
      )
        +  
       
       
      5

       
       
      (
      y
      8
      )
      =
       
       
      (
      29
      )
    •  
       
      5

       
       
      (
      x
      +
      2
      )
         
       
       
      4

       
       
      (
      y
      8
      )
      =
       
       
      13
  • (i)
    (
    (
    -7

    3
    )
    ,
    -3
    )
  • (ii)
    (
    2
    ,
    55

    7
    )
  • (iii)
    (
    1
    ,
    55

    7
    )
  • (iv)
    (
    (
    -7

    3
    )
    ,
    55

    7
    )
  • (v)
    (
    (
    -7

    3
    )
    ,
    -1
    )
Question 11
11.
    • Solve the following pair of equations :
    • (
      9
      x
      +
      11
      y
      )
      =
      (
      14
      x
      y
      )
    • (
      4
      x
      +
      12
      y
      )
      =
      (
      56
      x
      y
      )
  • (i)
    (
    (
    -1

    7
    )
    ,
    (
    -1

    7
    )
    )
  • (ii)
    (
    (
    -1

    7
    )
    ,
    1

    7
    )
  • (iii)
    (
    (
    -1

    7
    )
    ,
    (
    -1

    9
    )
    )
  • (iv)
    (
    (
    -1

    5
    )
    ,
    (
    -1

    7
    )
    )
  • (v)
    (
    (
    -3

    7
    )
    ,
    (
    -1

    7
    )
    )
Question 12
12.
    • Solve the following pair of equations :
    • (
      6
      x
      +
      7
      y
      )

      x
      y
      =
      -15
    • (
      5
      x
      +
      y
      )

      x
      y
      =
      -8
  • (i)
    (
    (
    -1

    3
    )
    ,
    -1
    )
  • (ii)
    (
    (
    -1

    3
    )
    ,
    1

    1
    )
  • (iii)
    (
    -1
    ,
    1

    1
    )
  • (iv)
    (
    (
    -1

    3
    )
    ,
    0
    )
Question 13
13.
    • Solve the following pair of equations :
    •  
       
      17

       
       

      x
         
       
       
      5

       
       

      y
      =
      -108
    •  
       
      7

       
       

      x
         
       
       
      3

       
       

      y
      =
      -36
  • (i)
    (
    1

    81
    ,
    1

    81
    )
  • (ii)
    (
    1

    83
    ,
    1

    81
    )
  • (iii)
    (
    1

    81
    ,
    (
    -1

    81
    )
    )
  • (iv)
    (
    1

    27
    ,
    1

    81
    )
  • (v)
    (
    1

    81
    ,
    1

    79
    )
    Assignment Key

  •  1) (iii)
  •  2) (iv)
  •  3) (iv)
  •  4) (i)
  •  5) (ii)
  •  6) (v)
  •  7) (ii)
  •  8) (i)
  •  9) (iii)
  •  10) (iv)
  •  11) (i)
  •  12) (ii)
  •  13) (i)