2m-4+2m=80

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Solution for 2m-4+2m=80 equation: 


Simplifying
2m + -4 + 2m = 80

Reorder the terms:
-4 + 2m + 2m = 80

Combine like terms: 2m + 2m = 4m
-4 + 4m = 80

Solving
-4 + 4m = 80

Solving for variable 'm'.

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

Add '4' to each side of the equation.
-4 + 4 + 4m = 80 + 4

Combine like terms: -4 + 4 = 0
0 + 4m = 80 + 4
4m = 80 + 4

Combine like terms: 80 + 4 = 84
4m = 84

Divide each side by '4'.
m = 21

Simplifying
m = 21

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