15=3(3a-1)

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Solution for 15=3(3a-1) equation:


Simplifying
15 = 3(3a + -1)

Reorder the terms:
15 = 3(-1 + 3a)
15 = (-1 * 3 + 3a * 3)
15 = (-3 + 9a)

Solving
15 = -3 + 9a

Solving for variable 'a'.

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

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

Combine like terms: 9a + -9a = 0
15 + -9a = -3 + 0
15 + -9a = -3

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

Combine like terms: 15 + -15 = 0
0 + -9a = -3 + -15
-9a = -3 + -15

Combine like terms: -3 + -15 = -18
-9a = -18

Divide each side by '-9'.
a = 2

Simplifying
a = 2

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