Solve for c
c=3
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30-5c-5c=0
Subtract 5c from both sides.
30-10c=0
Combine -5c and -5c to get -10c.
-10c=-30
Subtract 30 from both sides. Anything subtracted from zero gives its negation.
c=\frac{-30}{-10}
Divide both sides by -10.
c=3
Divide -30 by -10 to get 3.
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