z+n=r

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Solution for z+n=r equation: 


Simplifying
z + n = r

Reorder the terms:
n + z = r

Solving
n + z = r

Solving for variable 'n'.

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

Add '-1z' to each side of the equation.
n + z + -1z = r + -1z

Combine like terms: z + -1z = 0
n + 0 = r + -1z
n = r + -1z

Simplifying
n = r + -1z

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