7v-51=9v-91

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Solution for 7v-51=9v-91 equation:



7v-51=9v-91
We move all terms to the left:
7v-51-(9v-91)=0
We get rid of parentheses
7v-9v+91-51=0
We add all the numbers together, and all the variables
-2v+40=0
We move all terms containing v to the left, all other terms to the right
-2v=-40
v=-40/-2
v=+20

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