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-7v-5v=21
We simplify the equation to the form, which is simple to understand
-7v-5v=21
We move all terms containing v to the left and all other terms to the right.
-7v-5v=+21
We simplify left and right side of the equation.
-12v=+21
We divide both sides of the equation by -12 to get v.
v=-1.75
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