Question

Need help on this please!!!

Answer 1

In step 1, y was made the subject of the second equation to get:

y=5x-4

To proceed, the next step is to substitute the expression into the other equation, not the equation we solved for y.

8x+2y=-12

8x+2(5x-4)=-12

8x+10x-8=-12

18x=-12+8

18x=-4

x=-
`(4)/(18)`

x=
`\frac-{2}{9}`

answer= the value of x is -2/9