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-80-15v=-42
We simplify the equation to the form, which is simple to understand
-80-15v=-42
We move all terms containing v to the left and all other terms to the right.
-15v=-42+80
We simplify left and right side of the equation.
-15v=+38
We divide both sides of the equation by -15 to get v.
v=-2.5333333333333
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