xm-xn=4

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Solution for xm-xn=4 equation: 


Simplifying
xm + -1xn = 4

Solving
mx + -1nx = 4

Solving for variable 'm'.

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

Add 'nx' to each side of the equation.
mx + -1nx + nx = 4 + nx

Combine like terms: -1nx + nx = 0
mx + 0 = 4 + nx
mx = 4 + nx

Divide each side by 'x'.
m = 4x-1 + n

Simplifying
m = 4x-1 + n

Reorder the terms:
m = n + 4x-1

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