v = - 4
iso;ate 3v by subtracting 5 from both sides of the equation
- 12 = 3v ( divide both sides by 3 )
v = [tex]\frac{-12}{3}[/tex] = - 4
-7 = 5 + 3v
-7 + (-5) = 3v
-12 = 3v
v = -12 : 3
v = -4
