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7v+v=-4(4-3v)-2(5v+5v)
We simplify the equation to the form, which is simple to understand
7v+v=-4(4-3v)-2(5v+5v)
Simplifying terms in parentheses
7v+v=-4*(4-3v)-2*(+10v)
Reorder the terms in parentheses
7v+v=+(-16+12v)-2*(+10v)
Remove unnecessary parentheses
+7v+v=-16+12v-2+*(+10v+)
Reorder the terms in parentheses
7v+v=-16+12v+(-20v)
Remove unnecessary parentheses
+7v+v=-16+12v-20v
We move all terms containing v to the left and all other terms to the right.
+7v+1v-12v+20v=-16
We simplify left and right side of the equation.
+16v=-16
We divide both sides of the equation by 16 to get v.
v=-1
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