12+8-5n=42

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Solution for 12+8-5n=42 equation: 


Simplifying
12 + 8 + -5n = 42

Combine like terms: 12 + 8 = 20
20 + -5n = 42

Solving
20 + -5n = 42

Solving for variable 'n'.

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

Add '-20' to each side of the equation.
20 + -20 + -5n = 42 + -20

Combine like terms: 20 + -20 = 0
0 + -5n = 42 + -20
-5n = 42 + -20

Combine like terms: 42 + -20 = 22
-5n = 22

Divide each side by '-5'.
n = -4.4

Simplifying
n = -4.4

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