30n-9=3(6n+9)

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Solution for 30n-9=3(6n+9) equation:


Simplifying
30n + -9 = 3(6n + 9)

Reorder the terms:
-9 + 30n = 3(6n + 9)

Reorder the terms:
-9 + 30n = 3(9 + 6n)
-9 + 30n = (9 * 3 + 6n * 3)
-9 + 30n = (27 + 18n)

Solving
-9 + 30n = 27 + 18n

Solving for variable 'n'.

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

Add '-18n' to each side of the equation.
-9 + 30n + -18n = 27 + 18n + -18n

Combine like terms: 30n + -18n = 12n
-9 + 12n = 27 + 18n + -18n

Combine like terms: 18n + -18n = 0
-9 + 12n = 27 + 0
-9 + 12n = 27

Add '9' to each side of the equation.
-9 + 9 + 12n = 27 + 9

Combine like terms: -9 + 9 = 0
0 + 12n = 27 + 9
12n = 27 + 9

Combine like terms: 27 + 9 = 36
12n = 36

Divide each side by '12'.
n = 3

Simplifying
n = 3

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