-21+12=m-3

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Solution for -21+12=m-3 equation:


Simplifying
-21 + 12 = m + -3

Combine like terms: -21 + 12 = -9
-9 = m + -3

Reorder the terms:
-9 = -3 + m

Solving
-9 = -3 + 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.
-9 + -1m = -3 + m + -1m

Combine like terms: m + -1m = 0
-9 + -1m = -3 + 0
-9 + -1m = -3

Add '9' to each side of the equation.
-9 + 9 + -1m = -3 + 9

Combine like terms: -9 + 9 = 0
0 + -1m = -3 + 9
-1m = -3 + 9

Combine like terms: -3 + 9 = 6
-1m = 6

Divide each side by '-1'.
m = -6

Simplifying
m = -6

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