x(x-6)=3(x+12)

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Solution for x(x-6)=3(x+12) equation: 


Simplifying
x(x + -6) = 3(x + 12)

Reorder the terms:
x(-6 + x) = 3(x + 12)
(-6 * x + x * x) = 3(x + 12)
(-6x + x2) = 3(x + 12)

Reorder the terms:
-6x + x2 = 3(12 + x)
-6x + x2 = (12 * 3 + x * 3)
-6x + x2 = (36 + 3x)

Solving
-6x + x2 = 36 + 3x

Solving for variable 'x'.

Reorder the terms:
-36 + -6x + -3x + x2 = 36 + 3x + -36 + -3x

Combine like terms: -6x + -3x = -9x
-36 + -9x + x2 = 36 + 3x + -36 + -3x

Reorder the terms:
-36 + -9x + x2 = 36 + -36 + 3x + -3x

Combine like terms: 36 + -36 = 0
-36 + -9x + x2 = 0 + 3x + -3x
-36 + -9x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-36 + -9x + x2 = 0

Factor a trinomial.
(-3 + -1x)(12 + -1x) = 0


Subproblem 1
Set the factor '(-3 + -1x)' equal to zero and attempt to solve:

Simplifying
-3 + -1x = 0

Solving
-3 + -1x = 0

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

Add '3' to each side of the equation.
-3 + 3 + -1x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1x = 0 + 3
-1x = 0 + 3

Combine like terms: 0 + 3 = 3
-1x = 3

Divide each side by '-1'.
x = -3

Simplifying
x = -3

Subproblem 2
Set the factor '(12 + -1x)' equal to zero and attempt to solve:

Simplifying
12 + -1x = 0

Solving
12 + -1x = 0

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

Add '-12' to each side of the equation.
12 + -12 + -1x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = 0 + -12
-1x = 0 + -12

Combine like terms: 0 + -12 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12
Solution
x = {-3, 12}

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