77=9v+-13

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Solution for 77=9v+-13 equation:



77=9v+-13
We move all terms to the left:
77-(9v+-13)=0
We add all the numbers together, and all the variables
-(9v-13)+77=0
We get rid of parentheses
-9v+13+77=0
We add all the numbers together, and all the variables
-9v+90=0
We move all terms containing v to the left, all other terms to the right
-9v=-90
v=-90/-9
v=+10

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