(12-3)+n=18

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Solution for (12-3)+n=18 equation: 


Simplifying
(12 + -3) + n = 18

Combine like terms: 12 + -3 = 9
(9) + n = 18
9 + n = 18

Solving
9 + n = 18

Solving for variable 'n'.

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

Add '-9' to each side of the equation.
9 + -9 + n = 18 + -9

Combine like terms: 9 + -9 = 0
0 + n = 18 + -9
n = 18 + -9

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

Simplifying
n = 9

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