(3x+5)(4x-30)=

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Solution for (3x+5)(4x-30)= equation: 


Simplifying
(3x + 5)(4x + -30) = 0

Reorder the terms:
(5 + 3x)(4x + -30) = 0

Reorder the terms:
(5 + 3x)(-30 + 4x) = 0

Multiply (5 + 3x) * (-30 + 4x)
(5(-30 + 4x) + 3x * (-30 + 4x)) = 0
((-30 * 5 + 4x * 5) + 3x * (-30 + 4x)) = 0
((-150 + 20x) + 3x * (-30 + 4x)) = 0
(-150 + 20x + (-30 * 3x + 4x * 3x)) = 0
(-150 + 20x + (-90x + 12x2)) = 0

Combine like terms: 20x + -90x = -70x
(-150 + -70x + 12x2) = 0

Solving
-150 + -70x + 12x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-75 + -35x + 6x2) = 0

Factor a trinomial.
2((-5 + -3x)(15 + -2x)) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-5 + -3x)' equal to zero and attempt to solve:

Simplifying
-5 + -3x = 0

Solving
-5 + -3x = 0

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

Add '5' to each side of the equation.
-5 + 5 + -3x = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -3x = 0 + 5
-3x = 0 + 5

Combine like terms: 0 + 5 = 5
-3x = 5

Divide each side by '-3'.
x = -1.666666667

Simplifying
x = -1.666666667

Subproblem 2
Set the factor '(15 + -2x)' equal to zero and attempt to solve:

Simplifying
15 + -2x = 0

Solving
15 + -2x = 0

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

Add '-15' to each side of the equation.
15 + -15 + -2x = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -2x = 0 + -15
-2x = 0 + -15

Combine like terms: 0 + -15 = -15
-2x = -15

Divide each side by '-2'.
x = 7.5

Simplifying
x = 7.5
Solution
x = {-1.666666667, 7.5}

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