3c+7c-9c=8+12-7

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Solution for 3c+7c-9c=8+12-7 equation: 


Simplifying
3c + 7c + -9c = 8 + 12 + -7

Combine like terms: 3c + 7c = 10c
10c + -9c = 8 + 12 + -7

Combine like terms: 10c + -9c = 1c
1c = 8 + 12 + -7

Combine like terms: 8 + 12 = 20
1c = 20 + -7

Combine like terms: 20 + -7 = 13
1c = 13

Solving
1c = 13

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Divide each side by '1'.
c = 13

Simplifying
c = 13

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