-3(c-12)=21

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Solution for -3(c-12)=21 equation: 


Simplifying
-3(c + -12) = 21

Reorder the terms:
-3(-12 + c) = 21
(-12 * -3 + c * -3) = 21
(36 + -3c) = 21

Solving
36 + -3c = 21

Solving for variable 'c'.

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

Add '-36' to each side of the equation.
36 + -36 + -3c = 21 + -36

Combine like terms: 36 + -36 = 0
0 + -3c = 21 + -36
-3c = 21 + -36

Combine like terms: 21 + -36 = -15
-3c = -15

Divide each side by '-3'.
c = 5

Simplifying
c = 5

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