18=-7+3(n+9)

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Solution for 18=-7+3(n+9) equation:


Simplifying
18 = -7 + 3(n + 9)

Reorder the terms:
18 = -7 + 3(9 + n)
18 = -7 + (9 * 3 + n * 3)
18 = -7 + (27 + 3n)

Combine like terms: -7 + 27 = 20
18 = 20 + 3n

Solving
18 = 20 + 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.
18 + -3n = 20 + 3n + -3n

Combine like terms: 3n + -3n = 0
18 + -3n = 20 + 0
18 + -3n = 20

Add '-18' to each side of the equation.
18 + -18 + -3n = 20 + -18

Combine like terms: 18 + -18 = 0
0 + -3n = 20 + -18
-3n = 20 + -18

Combine like terms: 20 + -18 = 2
-3n = 2

Divide each side by '-3'.
n = -0.6666666667

Simplifying
n = -0.6666666667

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