3(c+7)=3(c-7)

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Solution for 3(c+7)=3(c-7) equation: 


Simplifying
3(c + 7) = 3(c + -7)

Reorder the terms:
3(7 + c) = 3(c + -7)
(7 * 3 + c * 3) = 3(c + -7)
(21 + 3c) = 3(c + -7)

Reorder the terms:
21 + 3c = 3(-7 + c)
21 + 3c = (-7 * 3 + c * 3)
21 + 3c = (-21 + 3c)

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

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

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

Solving
21 = -21

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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