m-19=20

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Solution for m-19=20 equation: 


Simplifying
m + -19 = 20

Reorder the terms:
-19 + m = 20

Solving
-19 + m = 20

Solving for variable 'm'.

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

Add '19' to each side of the equation.
-19 + 19 + m = 20 + 19

Combine like terms: -19 + 19 = 0
0 + m = 20 + 19
m = 20 + 19

Combine like terms: 20 + 19 = 39
m = 39

Simplifying
m = 39

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