(n-7)*3=18

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Solution for (n-7)*3=18 equation:


Simplifying
(n + -7) * 3 = 18

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

Reorder the terms for easier multiplication:
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 = 39
3n = 39

Divide each side by '3'.
n = 13

Simplifying
n = 13

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