Question

Solve the following simultaneous equation. 4x + y = 57 7x -2y = 21​

Answer 1

Answer:

x=9

y=21

Step-by-step explanation:

equation 1:- 4x+y=57;

multiplying the entire equation by 2 gives...

8x+2y=114________(equation I)

equation 2:- 7x-2y=21

On solving:- 8x+2y=114

7x - 2y= 21

-----------------

15x+0 = 135

x= 9

putting value of (x=9) in equation 2 we get

=> 63-2y=21

=> 2y=63-21

=> 2y=42

=> y=21

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Answer 2

Answer:

x = 9

y = 21

Step-by-step explanation:

Sorry for writing conjustedly. Image took that much only.

Hope this helped you.