20=m-19

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Solution for 20=m-19 equation:


Simplifying
20 = m + -19

Reorder the terms:
20 = -19 + m

Solving
20 = -19 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
20 + -1m = -19 + m + -1m

Combine like terms: m + -1m = 0
20 + -1m = -19 + 0
20 + -1m = -19

Add '-20' to each side of the equation.
20 + -20 + -1m = -19 + -20

Combine like terms: 20 + -20 = 0
0 + -1m = -19 + -20
-1m = -19 + -20

Combine like terms: -19 + -20 = -39
-1m = -39

Divide each side by '-1'.
m = 39

Simplifying
m = 39

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