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4(7+2v)=8v+21
We move all terms to the left:
4(7+2v)-(8v+21)=0
We add all the numbers together, and all the variables
4(2v+7)-(8v+21)=0
We multiply parentheses
8v-(8v+21)+28=0
We get rid of parentheses
8v-8v-21+28=0
We add all the numbers together, and all the variables
7!=0
There is no solution for this equation
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