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-30=-2(v+5)
We move all terms to the left:
-30-(-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)
2v+10-30=0
We add all the numbers together, and all the variables
2v-20=0
We move all terms containing v to the left, all other terms to the right
2v=20
v=20/2
v=10
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