15w+21=15w-21

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Solution for 15w+21=15w-21 equation: 


Simplifying
15w + 21 = 15w + -21

Reorder the terms:
21 + 15w = 15w + -21

Reorder the terms:
21 + 15w = -21 + 15w

Add '-15w' to each side of the equation.
21 + 15w + -15w = -21 + 15w + -15w

Combine like terms: 15w + -15w = 0
21 + 0 = -21 + 15w + -15w
21 = -21 + 15w + -15w

Combine like terms: 15w + -15w = 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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