4m-21=m+3

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Solution for 4m-21=m+3 equation:


Simplifying
4m + -21 = m + 3

Reorder the terms:
-21 + 4m = m + 3

Reorder the terms:
-21 + 4m = 3 + m

Solving
-21 + 4m = 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.
-21 + 4m + -1m = 3 + m + -1m

Combine like terms: 4m + -1m = 3m
-21 + 3m = 3 + m + -1m

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

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

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

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

Divide each side by '3'.
m = 8

Simplifying
m = 8

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