n+6=21

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Solution for n+6=21 equation: 


Simplifying
n + 6 = 21

Reorder the terms:
6 + n = 21

Solving
6 + n = 21

Solving for variable 'n'.

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

Add '-6' to each side of the equation.
6 + -6 + n = 21 + -6

Combine like terms: 6 + -6 = 0
0 + n = 21 + -6
n = 21 + -6

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

Simplifying
n = 15

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