3=m-21

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Solution for 3=m-21 equation:


Simplifying
3 = m + -21

Reorder the terms:
3 = -21 + m

Solving
3 = -21 + 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.
3 + -1m = -21 + m + -1m

Combine like terms: m + -1m = 0
3 + -1m = -21 + 0
3 + -1m = -21

Add '-3' to each side of the equation.
3 + -3 + -1m = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -1m = -21 + -3
-1m = -21 + -3

Combine like terms: -21 + -3 = -24
-1m = -24

Divide each side by '-1'.
m = 24

Simplifying
m = 24

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