Solve for c
c=1
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9-4c+7c=12
Add 7c to both sides.
9+3c=12
Combine -4c and 7c to get 3c.
3c=12-9
Subtract 9 from both sides.
3c=3
Subtract 9 from 12 to get 3.
c=\frac{3}{3}
Divide both sides by 3.
c=1
Divide 3 by 3 to get 1.
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