2m-n=4

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Solution for 2m-n=4 equation: 


Simplifying
2m + -1n = 4

Solving
2m + -1n = 4

Solving for variable 'm'.

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

Add 'n' to each side of the equation.
2m + -1n + n = 4 + n

Combine like terms: -1n + n = 0
2m + 0 = 4 + n
2m = 4 + n

Divide each side by '2'.
m = 2 + 0.5n

Simplifying
m = 2 + 0.5n

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