12+n-4=20

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Solution for 12+n-4=20 equation: 


Simplifying
12 + n + -4 = 20

Reorder the terms:
12 + -4 + n = 20

Combine like terms: 12 + -4 = 8
8 + n = 20

Solving
8 + n = 20

Solving for variable 'n'.

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

Add '-8' to each side of the equation.
8 + -8 + n = 20 + -8

Combine like terms: 8 + -8 = 0
0 + n = 20 + -8
n = 20 + -8

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

Simplifying
n = 12

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