9c+12c+9=-12

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Solution for 9c+12c+9=-12 equation:


Simplifying
9c + 12c + 9 = -12

Reorder the terms:
9 + 9c + 12c = -12

Combine like terms: 9c + 12c = 21c
9 + 21c = -12

Solving
9 + 21c = -12

Solving for variable 'c'.

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

Add '-9' to each side of the equation.
9 + -9 + 21c = -12 + -9

Combine like terms: 9 + -9 = 0
0 + 21c = -12 + -9
21c = -12 + -9

Combine like terms: -12 + -9 = -21
21c = -21

Divide each side by '21'.
c = -1

Simplifying
c = -1

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