-9=9x^2-7x-9

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Solution for -9=9x^2-7x-9 equation:


Simplifying
-9 = 9x2 + -7x + -9

Reorder the terms:
-9 = -9 + -7x + 9x2

Add '9' to each side of the equation.
-9 + 9 = -9 + -7x + 9 + 9x2

Combine like terms: -9 + 9 = 0
0 = -9 + -7x + 9 + 9x2

Reorder the terms:
0 = -9 + 9 + -7x + 9x2

Combine like terms: -9 + 9 = 0
0 = 0 + -7x + 9x2
0 = -7x + 9x2

Solving
0 = -7x + 9x2

Solving for variable 'x'.
Remove the zero:
7x + -9x2 = -7x + 9x2 + 7x + -9x2

Reorder the terms:
7x + -9x2 = -7x + 7x + 9x2 + -9x2

Combine like terms: -7x + 7x = 0
7x + -9x2 = 0 + 9x2 + -9x2
7x + -9x2 = 9x2 + -9x2

Combine like terms: 9x2 + -9x2 = 0
7x + -9x2 = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(7 + -9x) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

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, 0.7777777778}

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