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12+5+v=2v-9
We simplify the equation to the form, which is simple to understand
12+5+v=2v-9
We move all terms containing v to the left and all other terms to the right.
+1v-2v=-9-12-5
We simplify left and right side of the equation.
-1v=-26
We divide both sides of the equation by -1 to get v.
v=26
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