Question

x + 7y = 10; 3x - 2y = 7​

Answer 1

The answer is in the attachment.

Answer 2

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x + 7y = 10; 3x – 2y =7

x + 7y = 10............. equation(1)

3x – 2y = 7........... equation (2)

=> multiplying equation (1) by 3 .

x(3) + 7y(3) = 10(3)

=>. 3x + 21y = 30..........equation (3)

=> subtracting equation (2) from (3)

3x – 2y = 7

–

3x + 21y = 30

_ + –

______________

23y = 23

23

y = ______

23

: . y = 1 .

put y = 1 in equation (1) ,

x + 7 (1) = 10

: . x + 7 = 10

: . x = 10 – 7

: . x = 3

Añswér = ( y,x ) = ( 3,1 ).

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HOPE IT WILL HELP YOU

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