r+n=12.5

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Solution for r+n=12.5 equation: 


Simplifying
r + n = 12.5

Reorder the terms:
n + r = 12.5

Solving
n + r = 12.5

Solving for variable 'n'.

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

Add '-1r' to each side of the equation.
n + r + -1r = 12.5 + -1r

Combine like terms: r + -1r = 0
n + 0 = 12.5 + -1r
n = 12.5 + -1r

Simplifying
n = 12.5 + -1r

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