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-7(v)+4=-4(v-7)
We move all terms to the left:
-7(v)+4-(-4(v-7))=0
We calculate terms in parentheses: -(-4(v-7)), so:We get rid of parentheses
-4(v-7)
We multiply parentheses
-4v+28
Back to the equation:
-(-4v+28)
-7v+4v-28+4=0
We add all the numbers together, and all the variables
-3v-24=0
We move all terms containing v to the left, all other terms to the right
-3v=24
v=24/-3
v=-8
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