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30=5v+4(v+3)
We move all terms to the left:
30-(5v+4(v+3))=0
We calculate terms in parentheses: -(5v+4(v+3)), so:We get rid of parentheses
5v+4(v+3)
We multiply parentheses
5v+4v+12
We add all the numbers together, and all the variables
9v+12
Back to the equation:
-(9v+12)
-9v-12+30=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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