12x^2+9x-9=4x-7

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Solution for 12x^2+9x-9=4x-7 equation: 


Simplifying
12x2 + 9x + -9 = 4x + -7

Reorder the terms:
-9 + 9x + 12x2 = 4x + -7

Reorder the terms:
-9 + 9x + 12x2 = -7 + 4x

Solving
-9 + 9x + 12x2 = -7 + 4x

Solving for variable 'x'.

Reorder the terms:
-9 + 7 + 9x + -4x + 12x2 = -7 + 4x + 7 + -4x

Combine like terms: -9 + 7 = -2
-2 + 9x + -4x + 12x2 = -7 + 4x + 7 + -4x

Combine like terms: 9x + -4x = 5x
-2 + 5x + 12x2 = -7 + 4x + 7 + -4x

Reorder the terms:
-2 + 5x + 12x2 = -7 + 7 + 4x + -4x

Combine like terms: -7 + 7 = 0
-2 + 5x + 12x2 = 0 + 4x + -4x
-2 + 5x + 12x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
-2 + 5x + 12x2 = 0

Factor a trinomial.
(-2 + -3x)(1 + -4x) = 0


Subproblem 1
Set the factor '(-2 + -3x)' equal to zero and attempt to solve:

Simplifying
-2 + -3x = 0

Solving
-2 + -3x = 0

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

Add '2' to each side of the equation.
-2 + 2 + -3x = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -3x = 0 + 2
-3x = 0 + 2

Combine like terms: 0 + 2 = 2
-3x = 2

Divide each side by '-3'.
x = -0.6666666667

Simplifying
x = -0.6666666667

Subproblem 2
Set the factor '(1 + -4x)' equal to zero and attempt to solve:

Simplifying
1 + -4x = 0

Solving
1 + -4x = 0

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

Add '-1' to each side of the equation.
1 + -1 + -4x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -4x = 0 + -1
-4x = 0 + -1

Combine like terms: 0 + -1 = -1
-4x = -1

Divide each side by '-4'.
x = 0.25

Simplifying
x = 0.25
Solution
x = {-0.6666666667, 0.25}

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