15=m+m+1

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Solution for 15=m+m+1 equation: 


Simplifying
15 = m + m + 1

Reorder the terms:
15 = 1 + m + m

Combine like terms: m + m = 2m
15 = 1 + 2m

Solving
15 = 1 + 2m

Solving for variable 'm'.

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

Add '-2m' to each side of the equation.
15 + -2m = 1 + 2m + -2m

Combine like terms: 2m + -2m = 0
15 + -2m = 1 + 0
15 + -2m = 1

Add '-15' to each side of the equation.
15 + -15 + -2m = 1 + -15

Combine like terms: 15 + -15 = 0
0 + -2m = 1 + -15
-2m = 1 + -15

Combine like terms: 1 + -15 = -14
-2m = -14

Divide each side by '-2'.
m = 7

Simplifying
m = 7

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