7x^2-40x=2x^2-5x

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Solution for 7x^2-40x=2x^2-5x equation:


Simplifying
7x2 + -40x = 2x2 + -5x

Reorder the terms:
-40x + 7x2 = 2x2 + -5x

Reorder the terms:
-40x + 7x2 = -5x + 2x2

Solving
-40x + 7x2 = -5x + 2x2

Solving for variable 'x'.

Reorder the terms:
-40x + 5x + 7x2 + -2x2 = -5x + 2x2 + 5x + -2x2

Combine like terms: -40x + 5x = -35x
-35x + 7x2 + -2x2 = -5x + 2x2 + 5x + -2x2

Combine like terms: 7x2 + -2x2 = 5x2
-35x + 5x2 = -5x + 2x2 + 5x + -2x2

Reorder the terms:
-35x + 5x2 = -5x + 5x + 2x2 + -2x2

Combine like terms: -5x + 5x = 0
-35x + 5x2 = 0 + 2x2 + -2x2
-35x + 5x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-35x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5x'.
5x(-7 + x) = 0

Ignore the factor 5.

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 + x)' equal to zero and attempt to solve: Simplifying -7 + x = 0 Solving -7 + x = 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 + x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + x = 0 + 7 x = 0 + 7 Combine like terms: 0 + 7 = 7 x = 7 Simplifying x = 7

Solution

x = {0, 7}

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