Solve for v
v=2
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8v-21-2v=-9
Subtract 2v from both sides.
6v-21=-9
Combine 8v and -2v to get 6v.
6v=-9+21
Add 21 to both sides.
6v=12
Add -9 and 21 to get 12.
v=\frac{12}{6}
Divide both sides by 6.
v=2
Divide 12 by 6 to get 2.
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