-21+3=m-9

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Solution for -21+3=m-9 equation:


Simplifying
-21 + 3 = m + -9

Combine like terms: -21 + 3 = -18
-18 = m + -9

Reorder the terms:
-18 = -9 + m

Solving
-18 = -9 + m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-1m' to each side of the equation.
-18 + -1m = -9 + m + -1m

Combine like terms: m + -1m = 0
-18 + -1m = -9 + 0
-18 + -1m = -9

Add '18' to each side of the equation.
-18 + 18 + -1m = -9 + 18

Combine like terms: -18 + 18 = 0
0 + -1m = -9 + 18
-1m = -9 + 18

Combine like terms: -9 + 18 = 9
-1m = 9

Divide each side by '-1'.
m = -9

Simplifying
m = -9

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