(5x-7)(4x+3)=0

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Solution for (5x-7)(4x+3)=0 equation: 


Simplifying
(5x + -7)(4x + 3) = 0

Reorder the terms:
(-7 + 5x)(4x + 3) = 0

Reorder the terms:
(-7 + 5x)(3 + 4x) = 0

Multiply (-7 + 5x) * (3 + 4x)
(-7(3 + 4x) + 5x * (3 + 4x)) = 0
((3 * -7 + 4x * -7) + 5x * (3 + 4x)) = 0
((-21 + -28x) + 5x * (3 + 4x)) = 0
(-21 + -28x + (3 * 5x + 4x * 5x)) = 0
(-21 + -28x + (15x + 20x2)) = 0

Combine like terms: -28x + 15x = -13x
(-21 + -13x + 20x2) = 0

Solving
-21 + -13x + 20x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -4x)(7 + -5x) = 0


Subproblem 1
Set the factor '(-3 + -4x)' equal to zero and attempt to solve:

Simplifying
-3 + -4x = 0

Solving
-3 + -4x = 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 + -4x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -4x = 0 + 3
-4x = 0 + 3

Combine like terms: 0 + 3 = 3
-4x = 3

Divide each side by '-4'.
x = -0.75

Simplifying
x = -0.75

Subproblem 2
Set the factor '(7 + -5x)' equal to zero and attempt to solve:

Simplifying
7 + -5x = 0

Solving
7 + -5x = 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 + -5x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -5x = 0 + -7
-5x = 0 + -7

Combine like terms: 0 + -7 = -7
-5x = -7

Divide each side by '-5'.
x = 1.4

Simplifying
x = 1.4
Solution
x = {-0.75, 1.4}

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