12=20-n

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Solution for 12=20-n equation:


Simplifying
12 = 20 + -1n

Solving
12 = 20 + -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 = 20 + -1n + n

Combine like terms: -1n + n = 0
12 + n = 20 + 0
12 + n = 20

Add '-12' to each side of the equation.
12 + -12 + n = 20 + -12

Combine like terms: 12 + -12 = 0
0 + n = 20 + -12
n = 20 + -12

Combine like terms: 20 + -12 = 8
n = 8

Simplifying
n = 8

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