up+un=x

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Solution for up+un=x equation: 


Simplifying
up + un = x

Reorder the terms:
nu + pu = x

Solving
nu + pu = x

Solving for variable 'n'.

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

Add '-1pu' to each side of the equation.
nu + pu + -1pu = -1pu + x

Combine like terms: pu + -1pu = 0
nu + 0 = -1pu + x
nu = -1pu + x

Divide each side by 'u'.
n = -1p + u-1x

Simplifying
n = -1p + u-1x

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