21-3c=-15+7x

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Solution for 21-3c=-15+7x equation: 


Simplifying
21 + -3c = -15 + 7x

Solving
21 + -3c = -15 + 7x

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 + -3c = -15 + -21 + 7x

Combine like terms: 21 + -21 = 0
0 + -3c = -15 + -21 + 7x
-3c = -15 + -21 + 7x

Combine like terms: -15 + -21 = -36
-3c = -36 + 7x

Divide each side by '-3'.
c = 12 + -2.333333333x

Simplifying
c = 12 + -2.333333333x

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