3(a+5)=9a-9

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Solution for 3(a+5)=9a-9 equation:


Simplifying
3(a + 5) = 9a + -9

Reorder the terms:
3(5 + a) = 9a + -9
(5 * 3 + a * 3) = 9a + -9
(15 + 3a) = 9a + -9

Reorder the terms:
15 + 3a = -9 + 9a

Solving
15 + 3a = -9 + 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 + 3a + -9a = -9 + 9a + -9a

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

Combine like terms: 9a + -9a = 0
15 + -6a = -9 + 0
15 + -6a = -9

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

Combine like terms: 15 + -15 = 0
0 + -6a = -9 + -15
-6a = -9 + -15

Combine like terms: -9 + -15 = -24
-6a = -24

Divide each side by '-6'.
a = 4

Simplifying
a = 4

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