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7=2(v-4)-7v
We move all terms to the left:
7-(2(v-4)-7v)=0
We calculate terms in parentheses: -(2(v-4)-7v), so:We get rid of parentheses
2(v-4)-7v
We add all the numbers together, and all the variables
-7v+2(v-4)
We multiply parentheses
-7v+2v-8
We add all the numbers together, and all the variables
-5v-8
Back to the equation:
-(-5v-8)
5v+8+7=0
We add all the numbers together, and all the variables
5v+15=0
We move all terms containing v to the left, all other terms to the right
5v=-15
v=-15/5
v=-3
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