30-n=3(n+6)

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Solution for 30-n=3(n+6) equation:


Simplifying
30 + -1n = 3(n + 6)

Reorder the terms:
30 + -1n = 3(6 + n)
30 + -1n = (6 * 3 + n * 3)
30 + -1n = (18 + 3n)

Solving
30 + -1n = 18 + 3n

Solving for variable 'n'.

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

Add '-3n' to each side of the equation.
30 + -1n + -3n = 18 + 3n + -3n

Combine like terms: -1n + -3n = -4n
30 + -4n = 18 + 3n + -3n

Combine like terms: 3n + -3n = 0
30 + -4n = 18 + 0
30 + -4n = 18

Add '-30' to each side of the equation.
30 + -30 + -4n = 18 + -30

Combine like terms: 30 + -30 = 0
0 + -4n = 18 + -30
-4n = 18 + -30

Combine like terms: 18 + -30 = -12
-4n = -12

Divide each side by '-4'.
n = 3

Simplifying
n = 3

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