15-4c=21

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Solution for 15-4c=21 equation:


Simplifying
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 = 6
-4c = 6

Divide each side by '-4'.
c = -1.5

Simplifying
c = -1.5

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