-21=n-8

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Solution for -21=n-8 equation:


Simplifying
-21 = n + -8

Reorder the terms:
-21 = -8 + n

Solving
-21 = -8 + n

Solving for variable 'n'.

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

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

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

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 = 13
-1n = 13

Divide each side by '-1'.
n = -13

Simplifying
n = -13

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