12c+6=9c-15

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Solution for 12c+6=9c-15 equation:


Simplifying
12c + 6 = 9c + -15

Reorder the terms:
6 + 12c = 9c + -15

Reorder the terms:
6 + 12c = -15 + 9c

Solving
6 + 12c = -15 + 9c

Solving for variable 'c'.

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

Add '-9c' to each side of the equation.
6 + 12c + -9c = -15 + 9c + -9c

Combine like terms: 12c + -9c = 3c
6 + 3c = -15 + 9c + -9c

Combine like terms: 9c + -9c = 0
6 + 3c = -15 + 0
6 + 3c = -15

Add '-6' to each side of the equation.
6 + -6 + 3c = -15 + -6

Combine like terms: 6 + -6 = 0
0 + 3c = -15 + -6
3c = -15 + -6

Combine like terms: -15 + -6 = -21
3c = -21

Divide each side by '3'.
c = -7

Simplifying
c = -7

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