11+(m+9)+m=28

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Solution for 11+(m+9)+m=28 equation:


Simplifying
11 + (m + 9) + m = 28

Reorder the terms:
11 + (9 + m) + m = 28

Remove parenthesis around (9 + m)
11 + 9 + m + m = 28

Combine like terms: 11 + 9 = 20
20 + m + m = 28

Combine like terms: m + m = 2m
20 + 2m = 28

Solving
20 + 2m = 28

Solving for variable 'm'.

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

Add '-20' to each side of the equation.
20 + -20 + 2m = 28 + -20

Combine like terms: 20 + -20 = 0
0 + 2m = 28 + -20
2m = 28 + -20

Combine like terms: 28 + -20 = 8
2m = 8

Divide each side by '2'.
m = 4

Simplifying
m = 4

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