3*(a+6)(4-12)=18

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Solution for 3*(a+6)(4-12)=18 equation:


Simplifying
3(a + 6)(4 + -12) = 18

Reorder the terms:
3(6 + a)(4 + -12) = 18

Combine like terms: 4 + -12 = -8
3(6 + a)(-8) = 18

Reorder the terms for easier multiplication:
3 * -8(6 + a) = 18

Multiply 3 * -8
-24(6 + a) = 18
(6 * -24 + a * -24) = 18
(-144 + -24a) = 18

Solving
-144 + -24a = 18

Solving for variable 'a'.

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

Add '144' to each side of the equation.
-144 + 144 + -24a = 18 + 144

Combine like terms: -144 + 144 = 0
0 + -24a = 18 + 144
-24a = 18 + 144

Combine like terms: 18 + 144 = 162
-24a = 162

Divide each side by '-24'.
a = -6.75

Simplifying
a = -6.75

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