3(n+5)=21

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Solution for 3(n+5)=21 equation: 


Simplifying
3(n + 5) = 21

Reorder the terms:
3(5 + n) = 21
(5 * 3 + n * 3) = 21
(15 + 3n) = 21

Solving
15 + 3n = 21

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + 3n = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 3n = 21 + -15
3n = 21 + -15

Combine like terms: 21 + -15 = 6
3n = 6

Divide each side by '3'.
n = 2

Simplifying
n = 2

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