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-13=-3+v
We move all terms to the left:
-13-(-3+v)=0
We add all the numbers together, and all the variables
-(v-3)-13=0
We get rid of parentheses
-v+3-13=0
We add all the numbers together, and all the variables
-1v-10=0
We move all terms containing v to the left, all other terms to the right
-v=10
v=10/-1
v=-10
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