Question

If the first step in the solution of the equation -9 + x = 5x - 7 is "subtract x," then what should the next step be?

Answer 1

Add 7
so it will be like this

-9 + 7 = 5x - x
-2 = 4x
divide by 4
$\frac{-2}{4}$ = $\frac{4x}{4}$
x = $\frac{-1}{2}$