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-20+11=7v+2v
We simplify the equation to the form, which is simple to understand
-20+11=7v+2v
We move all terms containing v to the left and all other terms to the right.
-7v-2v=+20-11
We simplify left and right side of the equation.
-9v=+9
We divide both sides of the equation by -9 to get v.
v=-1
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