-21=3(v-3)-5v

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Solution for -21=3(v-3)-5v equation:



-21=3(v-3)-5v
We move all terms to the left:
-21-(3(v-3)-5v)=0
We calculate terms in parentheses: -(3(v-3)-5v), so:
3(v-3)-5v
We add all the numbers together, and all the variables
-5v+3(v-3)
We multiply parentheses
-5v+3v-9
We add all the numbers together, and all the variables
-2v-9
Back to the equation:
-(-2v-9)
We get rid of parentheses
2v+9-21=0
We add all the numbers together, and all the variables
2v-12=0
We move all terms containing v to the left, all other terms to the right
2v=12
v=12/2
v=6

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