SOLUTION:

Question 392237:
Answer by spikendb(5) (Show Source): You can put this solution on YOUR website!

First you use distributive property to get rid of the parentheses.

Because of the commutative property, -7tv = -7vt
So combine like terms (3vt and -7vt) to equal -4vt
is as far as you can simplify the problem, because isn't set equal to a whole number.