72x^2-9x=70x^2+7x

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Solution for 72x^2-9x=70x^2+7x equation:


Simplifying
72x2 + -9x = 70x2 + 7x

Reorder the terms:
-9x + 72x2 = 70x2 + 7x

Reorder the terms:
-9x + 72x2 = 7x + 70x2

Solving
-9x + 72x2 = 7x + 70x2

Solving for variable 'x'.

Reorder the terms:
-9x + -7x + 72x2 + -70x2 = 7x + 70x2 + -7x + -70x2

Combine like terms: -9x + -7x = -16x
-16x + 72x2 + -70x2 = 7x + 70x2 + -7x + -70x2

Combine like terms: 72x2 + -70x2 = 2x2
-16x + 2x2 = 7x + 70x2 + -7x + -70x2

Reorder the terms:
-16x + 2x2 = 7x + -7x + 70x2 + -70x2

Combine like terms: 7x + -7x = 0
-16x + 2x2 = 0 + 70x2 + -70x2
-16x + 2x2 = 70x2 + -70x2

Combine like terms: 70x2 + -70x2 = 0
-16x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2x'.
2x(-8 + x) = 0

Ignore the factor 2.

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 '(-8 + x)' equal to zero and attempt to solve: Simplifying -8 + x = 0 Solving -8 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 0 + 8 Combine like terms: -8 + 8 = 0 0 + x = 0 + 8 x = 0 + 8 Combine like terms: 0 + 8 = 8 x = 8 Simplifying x = 8

Solution

x = {0, 8}

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