3m+15=8m-5

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Solution for 3m+15=8m-5 equation: 


Simplifying
3m + 15 = 8m + -5

Reorder the terms:
15 + 3m = 8m + -5

Reorder the terms:
15 + 3m = -5 + 8m

Solving
15 + 3m = -5 + 8m

Solving for variable 'm'.

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

Add '-8m' to each side of the equation.
15 + 3m + -8m = -5 + 8m + -8m

Combine like terms: 3m + -8m = -5m
15 + -5m = -5 + 8m + -8m

Combine like terms: 8m + -8m = 0
15 + -5m = -5 + 0
15 + -5m = -5

Add '-15' to each side of the equation.
15 + -15 + -5m = -5 + -15

Combine like terms: 15 + -15 = 0
0 + -5m = -5 + -15
-5m = -5 + -15

Combine like terms: -5 + -15 = -20
-5m = -20

Divide each side by '-5'.
m = 4

Simplifying
m = 4

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