3(4x-7)(6x+7)=0

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Solution for 3(4x-7)(6x+7)=0 equation: 


Simplifying
3(4x + -7)(6x + 7) = 0

Reorder the terms:
3(-7 + 4x)(6x + 7) = 0

Reorder the terms:
3(-7 + 4x)(7 + 6x) = 0

Multiply (-7 + 4x) * (7 + 6x)
3(-7(7 + 6x) + 4x * (7 + 6x)) = 0
3((7 * -7 + 6x * -7) + 4x * (7 + 6x)) = 0
3((-49 + -42x) + 4x * (7 + 6x)) = 0
3(-49 + -42x + (7 * 4x + 6x * 4x)) = 0
3(-49 + -42x + (28x + 24x2)) = 0

Combine like terms: -42x + 28x = -14x
3(-49 + -14x + 24x2) = 0
(-49 * 3 + -14x * 3 + 24x2 * 3) = 0
(-147 + -42x + 72x2) = 0

Solving
-147 + -42x + 72x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-49 + -14x + 24x2) = 0

Factor a trinomial.
3((-7 + -6x)(7 + -4x)) = 0

Ignore the factor 3.

Subproblem 1
Set the factor '(-7 + -6x)' equal to zero and attempt to solve:

Simplifying
-7 + -6x = 0

Solving
-7 + -6x = 0

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

Add '7' to each side of the equation.
-7 + 7 + -6x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -6x = 0 + 7
-6x = 0 + 7

Combine like terms: 0 + 7 = 7
-6x = 7

Divide each side by '-6'.
x = -1.166666667

Simplifying
x = -1.166666667

Subproblem 2
Set the factor '(7 + -4x)' equal to zero and attempt to solve:

Simplifying
7 + -4x = 0

Solving
7 + -4x = 0

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

Add '-7' to each side of the equation.
7 + -7 + -4x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -4x = 0 + -7
-4x = 0 + -7

Combine like terms: 0 + -7 = -7
-4x = -7

Divide each side by '-4'.
x = 1.75

Simplifying
x = 1.75
Solution
x = {-1.166666667, 1.75}

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