6(a+2)3=9a-15

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Solution for 6(a+2)3=9a-15 equation:


Simplifying
6(a + 2) * 3 = 9a + -15

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

Reorder the terms for easier multiplication:
6 * 3(2 + a) = 9a + -15

Multiply 6 * 3
18(2 + a) = 9a + -15
(2 * 18 + a * 18) = 9a + -15
(36 + 18a) = 9a + -15

Reorder the terms:
36 + 18a = -15 + 9a

Solving
36 + 18a = -15 + 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.
36 + 18a + -9a = -15 + 9a + -9a

Combine like terms: 18a + -9a = 9a
36 + 9a = -15 + 9a + -9a

Combine like terms: 9a + -9a = 0
36 + 9a = -15 + 0
36 + 9a = -15

Add '-36' to each side of the equation.
36 + -36 + 9a = -15 + -36

Combine like terms: 36 + -36 = 0
0 + 9a = -15 + -36
9a = -15 + -36

Combine like terms: -15 + -36 = -51
9a = -51

Divide each side by '9'.
a = -5.666666667

Simplifying
a = -5.666666667

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