21+m=m-9

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Solution for 21+m=m-9 equation: 


Simplifying
21 + m = m + -9

Reorder the terms:
21 + m = -9 + m

Add '-1m' to each side of the equation.
21 + m + -1m = -9 + m + -1m

Combine like terms: m + -1m = 0
21 + 0 = -9 + m + -1m
21 = -9 + m + -1m

Combine like terms: m + -1m = 0
21 = -9 + 0
21 = -9

Solving
21 = -9

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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