15-c=12

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Solution for 15-c=12 equation: 


Simplifying
15 + -1c = 12

Solving
15 + -1c = 12

Solving for variable 'c'.

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

Add '-15' to each side of the equation.
15 + -15 + -1c = 12 + -15

Combine like terms: 15 + -15 = 0
0 + -1c = 12 + -15
-1c = 12 + -15

Combine like terms: 12 + -15 = -3
-1c = -3

Divide each side by '-1'.
c = 3

Simplifying
c = 3

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