-13=n-21

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Solution for -13=n-21 equation:


Simplifying
-13 = n + -21

Reorder the terms:
-13 = -21 + n

Solving
-13 = -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.
-13 + -1n = -21 + n + -1n

Combine like terms: n + -1n = 0
-13 + -1n = -21 + 0
-13 + -1n = -21

Add '13' to each side of the equation.
-13 + 13 + -1n = -21 + 13

Combine like terms: -13 + 13 = 0
0 + -1n = -21 + 13
-1n = -21 + 13

Combine like terms: -21 + 13 = -8
-1n = -8

Divide each side by '-1'.
n = 8

Simplifying
n = 8

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