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8+v-7v=20
We simplify the equation to the form, which is simple to understand
8+v-7v=20
We move all terms containing v to the left and all other terms to the right.
+1v-7v=+20-8
We simplify left and right side of the equation.
-6v=+12
We divide both sides of the equation by -6 to get v.
v=-2
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