(9x-7)(7x+2)=0

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Solution for (9x-7)(7x+2)=0 equation: 


Simplifying
(9x + -7)(7x + 2) = 0

Reorder the terms:
(-7 + 9x)(7x + 2) = 0

Reorder the terms:
(-7 + 9x)(2 + 7x) = 0

Multiply (-7 + 9x) * (2 + 7x)
(-7(2 + 7x) + 9x * (2 + 7x)) = 0
((2 * -7 + 7x * -7) + 9x * (2 + 7x)) = 0
((-14 + -49x) + 9x * (2 + 7x)) = 0
(-14 + -49x + (2 * 9x + 7x * 9x)) = 0
(-14 + -49x + (18x + 63x2)) = 0

Combine like terms: -49x + 18x = -31x
(-14 + -31x + 63x2) = 0

Solving
-14 + -31x + 63x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-2 + -7x)(7 + -9x) = 0


Subproblem 1
Set the factor '(-2 + -7x)' equal to zero and attempt to solve:

Simplifying
-2 + -7x = 0

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

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

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

Divide each side by '-7'.
x = -0.2857142857

Simplifying
x = -0.2857142857

Subproblem 2
Set the factor '(7 + -9x)' equal to zero and attempt to solve:

Simplifying
7 + -9x = 0

Solving
7 + -9x = 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 + -9x = 0 + -7

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

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

Divide each side by '-9'.
x = 0.7777777778

Simplifying
x = 0.7777777778
Solution
x = {-0.2857142857, 0.7777777778}

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