18=20-m

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Solution for 18=20-m equation:


Simplifying
18 = 20 + -1m

Solving
18 = 20 + -1m

Solving for variable 'm'.

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

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

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

Add '-18' to each side of the equation.
18 + -18 + m = 20 + -18

Combine like terms: 18 + -18 = 0
0 + m = 20 + -18
m = 20 + -18

Combine like terms: 20 + -18 = 2
m = 2

Simplifying
m = 2

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