3(a+5)+12a=-9(1-2a)

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Solution for 3(a+5)+12a=-9(1-2a) equation:


Simplifying
3(a + 5) + 12a = -9(1 + -2a)

Reorder the terms:
3(5 + a) + 12a = -9(1 + -2a)
(5 * 3 + a * 3) + 12a = -9(1 + -2a)
(15 + 3a) + 12a = -9(1 + -2a)

Combine like terms: 3a + 12a = 15a
15 + 15a = -9(1 + -2a)
15 + 15a = (1 * -9 + -2a * -9)
15 + 15a = (-9 + 18a)

Solving
15 + 15a = -9 + 18a

Solving for variable 'a'.

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

Add '-18a' to each side of the equation.
15 + 15a + -18a = -9 + 18a + -18a

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

Combine like terms: 18a + -18a = 0
15 + -3a = -9 + 0
15 + -3a = -9

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

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

Combine like terms: -9 + -15 = -24
-3a = -24

Divide each side by '-3'.
a = 8

Simplifying
a = 8

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