-21=-n-9-6

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Solution for -21=-n-9-6 equation:


Simplifying
-21 = -1n + -9 + -6

Reorder the terms:
-21 = -9 + -6 + -1n

Combine like terms: -9 + -6 = -15
-21 = -15 + -1n

Solving
-21 = -15 + -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.
-21 + n = -15 + -1n + n

Combine like terms: -1n + n = 0
-21 + n = -15 + 0
-21 + n = -15

Add '21' to each side of the equation.
-21 + 21 + n = -15 + 21

Combine like terms: -21 + 21 = 0
0 + n = -15 + 21
n = -15 + 21

Combine like terms: -15 + 21 = 6
n = 6

Simplifying
n = 6

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