Solve for v
v=50
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10v+600-200=18v
Combine 5v and 5v to get 10v.
10v+400=18v
Subtract 200 from 600 to get 400.
10v+400-18v=0
Subtract 18v from both sides.
-8v+400=0
Combine 10v and -18v to get -8v.
-8v=-400
Subtract 400 from both sides. Anything subtracted from zero gives its negation.
v=\frac{-400}{-8}
Divide both sides by -8.
v=50
Divide -400 by -8 to get 50.
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