42+n=123

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Solution for 42+n=123 equation: 


Simplifying
42 + n = 123

Solving
42 + n = 123

Solving for variable 'n'.

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

Add '-42' to each side of the equation.
42 + -42 + n = 123 + -42

Combine like terms: 42 + -42 = 0
0 + n = 123 + -42
n = 123 + -42

Combine like terms: 123 + -42 = 81
n = 81

Simplifying
n = 81

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