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28+3v=-7(7v-4)
We move all terms to the left:
28+3v-(-7(7v-4))=0
We calculate terms in parentheses: -(-7(7v-4)), so:We get rid of parentheses
-7(7v-4)
We multiply parentheses
-49v+28
Back to the equation:
-(-49v+28)
3v+49v-28+28=0
We add all the numbers together, and all the variables
52v=0
v=0/52
v=0
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