(2x+7)(3x+12)=0

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Solution for (2x+7)(3x+12)=0 equation: 


Simplifying
(2x + 7)(3x + 12) = 0

Reorder the terms:
(7 + 2x)(3x + 12) = 0

Reorder the terms:
(7 + 2x)(12 + 3x) = 0

Multiply (7 + 2x) * (12 + 3x)
(7(12 + 3x) + 2x * (12 + 3x)) = 0
((12 * 7 + 3x * 7) + 2x * (12 + 3x)) = 0
((84 + 21x) + 2x * (12 + 3x)) = 0
(84 + 21x + (12 * 2x + 3x * 2x)) = 0
(84 + 21x + (24x + 6x2)) = 0

Combine like terms: 21x + 24x = 45x
(84 + 45x + 6x2) = 0

Solving
84 + 45x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(28 + 15x + 2x2) = 0

Factor a trinomial.
3((4 + x)(7 + 2x)) = 0

Ignore the factor 3.

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

Simplifying
4 + x = 0

Solving
4 + x = 0

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

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

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

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

Simplifying
x = -4

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

Simplifying
7 + 2x = 0

Solving
7 + 2x = 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 + 2x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 2x = 0 + -7
2x = 0 + -7

Combine like terms: 0 + -7 = -7
2x = -7

Divide each side by '2'.
x = -3.5

Simplifying
x = -3.5
Solution
x = {-4, -3.5}

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