Solve for c
c=-6
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4c+18=c
Use the distributive property to multiply 2 by 2c+9.
4c+18-c=0
Subtract c from both sides.
3c+18=0
Combine 4c and -c to get 3c.
3c=-18
Subtract 18 from both sides. Anything subtracted from zero gives its negation.
c=\frac{-18}{3}
Divide both sides by 3.
c=-6
Divide -18 by 3 to get -6.
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