3=n-m

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Solution for 3=n-m equation: 


Simplifying
3 = n + -1m

Reorder the terms:
3 = -1m + n

Solving
3 = -1m + n

Solving for variable 'm'.

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

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

Combine like terms: -1m + m = 0
3 + m = 0 + n
3 + m = n

Add '-3' to each side of the equation.
3 + -3 + m = -3 + n

Combine like terms: 3 + -3 = 0
0 + m = -3 + n
m = -3 + n

Simplifying
m = -3 + n

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