20-300=m

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Solution for 20-300=m equation:


Simplifying
20 + -300 = m

Combine like terms: 20 + -300 = -280
-280 = m

Solving
-280 = 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.
-280 + -1m = m + -1m

Combine like terms: m + -1m = 0
-280 + -1m = 0

Add '280' to each side of the equation.
-280 + 280 + -1m = 0 + 280

Combine like terms: -280 + 280 = 0
0 + -1m = 0 + 280
-1m = 0 + 280

Combine like terms: 0 + 280 = 280
-1m = 280

Divide each side by '-1'.
m = -280

Simplifying
m = -280

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