v = 2
distribute (6 - 2v) by - 1
7v - 6 + 2v = 12
9v - 6 = 12
add 6 to both sides
9v = 12 + 6 = 18
divide both sides by 9
v = [tex]\frac{18}{9}[/tex] = 2
7v-(6-2v)=12
Distributing the negative over the parentheses:-
7v-6+2v=12
Adding like terms
9v - 6 = 12
Adding 6 to both sides:-
9v = 18
v = 2 (answer)