-7=-2v+1

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Solution for -7=-2v+1 equation: 



-7=-2v+1

We move all terms to the left:

-7-(-2v+1)=0

We get rid of parentheses

2v-1-7=0

We add all the numbers together, and all the variables

2v-8=0

We move all terms containing v to the left, all other terms to the right

2v=8

v=8/2

v=4

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