Question

Solve: 8x+14y=4 6x+7y=10

Answer 1

Therefore, x = 4 and y = -2.

Explanation:

The steps are ;

`8x + 14y = 4`

`2(4x + 7y) = 4`

`4x + 7y = 2 - - - (1)`

`6x + 7y = 10 - - - (2)`

`(2) - (1)`

`6x - 4x = 10 - 2`

`2x = 8`

`x = 4`

`sub \: x = 4 \: into \: (1)`

`(1)⇒`

`4(4) + 7y = 2`

`16 + 7y = 2`

`7y = - 14`

`y = - 2`