3+n=31

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Solution for 3+n=31 equation: 


Simplifying
3 + n = 31

Solving
3 + n = 31

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + n = 31 + -3

Combine like terms: 3 + -3 = 0
0 + n = 31 + -3
n = 31 + -3

Combine like terms: 31 + -3 = 28
n = 28

Simplifying
n = 28

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