3+n=15

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Solution for 3+n=15 equation: 


Simplifying
3 + n = 15

Solving
3 + n = 15

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 = 15 + -3

Combine like terms: 3 + -3 = 0
0 + n = 15 + -3
n = 15 + -3

Combine like terms: 15 + -3 = 12
n = 12

Simplifying
n = 12

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