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

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


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

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

Reorder the terms:
9 + 3a = 12(-5 + a)
9 + 3a = (-5 * 12 + a * 12)
9 + 3a = (-60 + 12a)

Solving
9 + 3a = -60 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
9 + 3a + -12a = -60 + 12a + -12a

Combine like terms: 3a + -12a = -9a
9 + -9a = -60 + 12a + -12a

Combine like terms: 12a + -12a = 0
9 + -9a = -60 + 0
9 + -9a = -60

Add '-9' to each side of the equation.
9 + -9 + -9a = -60 + -9

Combine like terms: 9 + -9 = 0
0 + -9a = -60 + -9
-9a = -60 + -9

Combine like terms: -60 + -9 = -69
-9a = -69

Divide each side by '-9'.
a = 7.666666667

Simplifying
a = 7.666666667

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