Question

-1=7+8x

Answer 1

-8x = 8
x = -1

Answer 2

Try to isolate (get by itself) x

If we want to keep x on the right side of the = sign, we need to subtract 7 on both sides

That gives us:

-8 = 8x

When we divide by 8 on both sides we get

-1 = x

which is the same as --> x = -1