m+28=20

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Solution for m+28=20 equation: 


Simplifying
m + 28 = 20

Reorder the terms:
28 + m = 20

Solving
28 + m = 20

Solving for variable 'm'.

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

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

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

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

Simplifying
m = -8

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