n+12=30-n

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Solution for n+12=30-n equation:


Simplifying
n + 12 = 30 + -1n

Reorder the terms:
12 + n = 30 + -1n

Solving
12 + n = 30 + -1n

Solving for variable 'n'.

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

Add 'n' to each side of the equation.
12 + n + n = 30 + -1n + n

Combine like terms: n + n = 2n
12 + 2n = 30 + -1n + n

Combine like terms: -1n + n = 0
12 + 2n = 30 + 0
12 + 2n = 30

Add '-12' to each side of the equation.
12 + -12 + 2n = 30 + -12

Combine like terms: 12 + -12 = 0
0 + 2n = 30 + -12
2n = 30 + -12

Combine like terms: 30 + -12 = 18
2n = 18

Divide each side by '2'.
n = 9

Simplifying
n = 9

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