(3x-5)(7x+9)=0

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Solution for (3x-5)(7x+9)=0 equation: 


Simplifying
(3x + -5)(7x + 9) = 0

Reorder the terms:
(-5 + 3x)(7x + 9) = 0

Reorder the terms:
(-5 + 3x)(9 + 7x) = 0

Multiply (-5 + 3x) * (9 + 7x)
(-5(9 + 7x) + 3x * (9 + 7x)) = 0
((9 * -5 + 7x * -5) + 3x * (9 + 7x)) = 0
((-45 + -35x) + 3x * (9 + 7x)) = 0
(-45 + -35x + (9 * 3x + 7x * 3x)) = 0
(-45 + -35x + (27x + 21x2)) = 0

Combine like terms: -35x + 27x = -8x
(-45 + -8x + 21x2) = 0

Solving
-45 + -8x + 21x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-9 + -7x)(5 + -3x) = 0


Subproblem 1
Set the factor '(-9 + -7x)' equal to zero and attempt to solve:

Simplifying
-9 + -7x = 0

Solving
-9 + -7x = 0

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

Add '9' to each side of the equation.
-9 + 9 + -7x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -7x = 0 + 9
-7x = 0 + 9

Combine like terms: 0 + 9 = 9
-7x = 9

Divide each side by '-7'.
x = -1.285714286

Simplifying
x = -1.285714286

Subproblem 2
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
Solution
x = {-1.285714286, 1.666666667}

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