31=n+13

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Solution for 31=n+13 equation:


Simplifying
31 = n + 13

Reorder the terms:
31 = 13 + n

Solving
31 = 13 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
31 + -1n = 13 + n + -1n

Combine like terms: n + -1n = 0
31 + -1n = 13 + 0
31 + -1n = 13

Add '-31' to each side of the equation.
31 + -31 + -1n = 13 + -31

Combine like terms: 31 + -31 = 0
0 + -1n = 13 + -31
-1n = 13 + -31

Combine like terms: 13 + -31 = -18
-1n = -18

Divide each side by '-1'.
n = 18

Simplifying
n = 18

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