Question

HELP ME PLEASE PLEASE

Answer 1

The value of x is 7 and y is 14.

Explanation:

The steps are :

`- 3x + y = - 7 - - - (1)`

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

`(2)→(1)`

`- 3x + (x + 7) = - 7 \\ - 3x + x + 7 = - 7 \\ - 2x = - 14 \\ x = 7`

`substitute \: x = 7 \: \: into \: \: (2)`

`y = 7 + 7 \\ y = 14`