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7(1+2v)=91
We simplify the equation to the form, which is simple to understand
7(1+2v)=91
Reorder the terms in parentheses
+(+7+14v)=91
Remove unnecessary parentheses
+7+14v=+91
We move all terms containing v to the left and all other terms to the right.
+14v=+91-7
We simplify left and right side of the equation.
+14v=+84
We divide both sides of the equation by 14 to get v.
v=6
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