C+9+12=-3

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Solution for C+9+12=-3 equation: 


Simplifying
C + 9 + 12 = -3

Reorder the terms:
9 + 12 + C = -3

Combine like terms: 9 + 12 = 21
21 + C = -3

Solving
21 + C = -3

Solving for variable 'C'.

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

Add '-21' to each side of the equation.
21 + -21 + C = -3 + -21

Combine like terms: 21 + -21 = 0
0 + C = -3 + -21
C = -3 + -21

Combine like terms: -3 + -21 = -24
C = -24

Simplifying
C = -24

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