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-v+2v+7v=18
We simplify the equation to the form, which is simple to understand
-v+2v+7v=18
We move all terms containing v to the left and all other terms to the right.
-1v+2v+7v=+18
We simplify left and right side of the equation.
+8v=+18
We divide both sides of the equation by 8 to get v.
v=2.25
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