n+7+9=21

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Solution for n+7+9=21 equation: 


Simplifying
n + 7 + 9 = 21

Reorder the terms:
7 + 9 + n = 21

Combine like terms: 7 + 9 = 16
16 + n = 21

Solving
16 + n = 21

Solving for variable 'n'.

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

Add '-16' to each side of the equation.
16 + -16 + n = 21 + -16

Combine like terms: 16 + -16 = 0
0 + n = 21 + -16
n = 21 + -16

Combine like terms: 21 + -16 = 5
n = 5

Simplifying
n = 5

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