100=80-5m

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Solution for 100=80-5m equation:


Simplifying
100 = 80 + -5m

Solving
100 = 80 + -5m

Solving for variable 'm'.

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

Add '5m' to each side of the equation.
100 + 5m = 80 + -5m + 5m

Combine like terms: -5m + 5m = 0
100 + 5m = 80 + 0
100 + 5m = 80

Add '-100' to each side of the equation.
100 + -100 + 5m = 80 + -100

Combine like terms: 100 + -100 = 0
0 + 5m = 80 + -100
5m = 80 + -100

Combine like terms: 80 + -100 = -20
5m = -20

Divide each side by '5'.
m = -4

Simplifying
m = -4

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