12 = -5x/4 - 8
Multiply both sides of the equation by 4.
48 = −5x − 32
Swap the sides so that all variable terms are on the left side.
−5x − 32 = 48
Add 32 to both sides.
−5x = 48 + 32
Add 48 and 32 to get 80.
−5x = 80
Divide both sides by −5.
x = 80/-5
Divide 80 by −5 to get −16.
x= −16