30m+100=40

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Solution for 30m+100=40 equation: 


Simplifying
30m + 100 = 40

Reorder the terms:
100 + 30m = 40

Solving
100 + 30m = 40

Solving for variable 'm'.

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

Add '-100' to each side of the equation.
100 + -100 + 30m = 40 + -100

Combine like terms: 100 + -100 = 0
0 + 30m = 40 + -100
30m = 40 + -100

Combine like terms: 40 + -100 = -60
30m = -60

Divide each side by '30'.
m = -2

Simplifying
m = -2

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