-12=n-21

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Solution for -12=n-21 equation:


Simplifying
-12 = n + -21

Reorder the terms:
-12 = -21 + n

Solving
-12 = -21 + 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.
-12 + -1n = -21 + n + -1n

Combine like terms: n + -1n = 0
-12 + -1n = -21 + 0
-12 + -1n = -21

Add '12' to each side of the equation.
-12 + 12 + -1n = -21 + 12

Combine like terms: -12 + 12 = 0
0 + -1n = -21 + 12
-1n = -21 + 12

Combine like terms: -21 + 12 = -9
-1n = -9

Divide each side by '-1'.
n = 9

Simplifying
n = 9

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