9m-21=4m+3

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Solution for 9m-21=4m+3 equation:


Simplifying
9m + -21 = 4m + 3

Reorder the terms:
-21 + 9m = 4m + 3

Reorder the terms:
-21 + 9m = 3 + 4m

Solving
-21 + 9m = 3 + 4m

Solving for variable 'm'.

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

Add '-4m' to each side of the equation.
-21 + 9m + -4m = 3 + 4m + -4m

Combine like terms: 9m + -4m = 5m
-21 + 5m = 3 + 4m + -4m

Combine like terms: 4m + -4m = 0
-21 + 5m = 3 + 0
-21 + 5m = 3

Add '21' to each side of the equation.
-21 + 21 + 5m = 3 + 21

Combine like terms: -21 + 21 = 0
0 + 5m = 3 + 21
5m = 3 + 21

Combine like terms: 3 + 21 = 24
5m = 24

Divide each side by '5'.
m = 4.8

Simplifying
m = 4.8

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