-4c-15=21

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Solution for -4c-15=21 equation: 


Simplifying
-4c + -15 = 21

Reorder the terms:
-15 + -4c = 21

Solving
-15 + -4c = 21

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 + -4c = 21 + 15

Combine like terms: -15 + 15 = 0
0 + -4c = 21 + 15
-4c = 21 + 15

Combine like terms: 21 + 15 = 36
-4c = 36

Divide each side by '-4'.
c = -9

Simplifying
c = -9

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