3(a+5)+3a=12a-3(a-3)-2

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Solution for 3(a+5)+3a=12a-3(a-3)-2 equation:


Simplifying
3(a + 5) + 3a = 12a + -3(a + -3) + -2

Reorder the terms:
3(5 + a) + 3a = 12a + -3(a + -3) + -2
(5 * 3 + a * 3) + 3a = 12a + -3(a + -3) + -2
(15 + 3a) + 3a = 12a + -3(a + -3) + -2

Combine like terms: 3a + 3a = 6a
15 + 6a = 12a + -3(a + -3) + -2

Reorder the terms:
15 + 6a = 12a + -3(-3 + a) + -2
15 + 6a = 12a + (-3 * -3 + a * -3) + -2
15 + 6a = 12a + (9 + -3a) + -2

Reorder the terms:
15 + 6a = 9 + -2 + 12a + -3a

Combine like terms: 9 + -2 = 7
15 + 6a = 7 + 12a + -3a

Combine like terms: 12a + -3a = 9a
15 + 6a = 7 + 9a

Solving
15 + 6a = 7 + 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 + 6a + -9a = 7 + 9a + -9a

Combine like terms: 6a + -9a = -3a
15 + -3a = 7 + 9a + -9a

Combine like terms: 9a + -9a = 0
15 + -3a = 7 + 0
15 + -3a = 7

Add '-15' to each side of the equation.
15 + -15 + -3a = 7 + -15

Combine like terms: 15 + -15 = 0
0 + -3a = 7 + -15
-3a = 7 + -15

Combine like terms: 7 + -15 = -8
-3a = -8

Divide each side by '-3'.
a = 2.666666667

Simplifying
a = 2.666666667

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