3(n+7)=18

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Solution for 3(n+7)=18 equation: 


Simplifying
3(n + 7) = 18

Reorder the terms:
3(7 + n) = 18
(7 * 3 + n * 3) = 18
(21 + 3n) = 18

Solving
21 + 3n = 18

Solving for variable 'n'.

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

Add '-21' to each side of the equation.
21 + -21 + 3n = 18 + -21

Combine like terms: 21 + -21 = 0
0 + 3n = 18 + -21
3n = 18 + -21

Combine like terms: 18 + -21 = -3
3n = -3

Divide each side by '3'.
n = -1

Simplifying
n = -1

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