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7v-28=-2(v+5)
We move all terms to the left:
7v-28-(-2(v+5))=0
We calculate terms in parentheses: -(-2(v+5)), so:We get rid of parentheses
-2(v+5)
We multiply parentheses
-2v-10
Back to the equation:
-(-2v-10)
7v+2v+10-28=0
We add all the numbers together, and all the variables
9v-18=0
We move all terms containing v to the left, all other terms to the right
9v=18
v=18/9
v=2
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