21-n=-8

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Solution for 21-n=-8 equation: 


Simplifying
21 + -1n = -8

Solving
21 + -1n = -8

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + -1n = -8 + -21

Combine like terms: 21 + -21 = 0
0 + -1n = -8 + -21
-1n = -8 + -21

Combine like terms: -8 + -21 = -29
-1n = -29

Divide each side by '-1'.
n = 29

Simplifying
n = 29

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