(5x+2)(3x-1)=4

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Solution for (5x+2)(3x-1)=4 equation: 


Simplifying
(5x + 2)(3x + -1) = 4

Reorder the terms:
(2 + 5x)(3x + -1) = 4

Reorder the terms:
(2 + 5x)(-1 + 3x) = 4

Multiply (2 + 5x) * (-1 + 3x)
(2(-1 + 3x) + 5x * (-1 + 3x)) = 4
((-1 * 2 + 3x * 2) + 5x * (-1 + 3x)) = 4
((-2 + 6x) + 5x * (-1 + 3x)) = 4
(-2 + 6x + (-1 * 5x + 3x * 5x)) = 4
(-2 + 6x + (-5x + 15x2)) = 4

Combine like terms: 6x + -5x = 1x
(-2 + 1x + 15x2) = 4

Solving
-2 + 1x + 15x2 = 4

Solving for variable 'x'.

Reorder the terms:
-2 + -4 + 1x + 15x2 = 4 + -4

Combine like terms: -2 + -4 = -6
-6 + 1x + 15x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-6 + 1x + 15x2 = 0

Factor a trinomial.
(-2 + -3x)(3 + -5x) = 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 '(3 + -5x)' equal to zero and attempt to solve:

Simplifying
3 + -5x = 0

Solving
3 + -5x = 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 + -5x = 0 + -3

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

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

Divide each side by '-5'.
x = 0.6

Simplifying
x = 0.6
Solution
x = {-0.6666666667, 0.6}

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