31+9n=13

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Solution for 31+9n=13 equation: 


Simplifying
31 + 9n = 13

Solving
31 + 9n = 13

Solving for variable 'n'.

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

Add '-31' to each side of the equation.
31 + -31 + 9n = 13 + -31

Combine like terms: 31 + -31 = 0
0 + 9n = 13 + -31
9n = 13 + -31

Combine like terms: 13 + -31 = -18
9n = -18

Divide each side by '9'.
n = -2

Simplifying
n = -2

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