9n-15=3(2n-1)

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Solution for 9n-15=3(2n-1) equation: 


Simplifying
9n + -15 = 3(2n + -1)

Reorder the terms:
-15 + 9n = 3(2n + -1)

Reorder the terms:
-15 + 9n = 3(-1 + 2n)
-15 + 9n = (-1 * 3 + 2n * 3)
-15 + 9n = (-3 + 6n)

Solving
-15 + 9n = -3 + 6n

Solving for variable 'n'.

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

Add '-6n' to each side of the equation.
-15 + 9n + -6n = -3 + 6n + -6n

Combine like terms: 9n + -6n = 3n
-15 + 3n = -3 + 6n + -6n

Combine like terms: 6n + -6n = 0
-15 + 3n = -3 + 0
-15 + 3n = -3

Add '15' to each side of the equation.
-15 + 15 + 3n = -3 + 15

Combine like terms: -15 + 15 = 0
0 + 3n = -3 + 15
3n = -3 + 15

Combine like terms: -3 + 15 = 12
3n = 12

Divide each side by '3'.
n = 4

Simplifying
n = 4

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