7x^2=15x+x^2

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Solution for 7x^2=15x+x^2 equation:


Simplifying
7x2 = 15x + x2

Solving
7x2 = 15x + x2

Solving for variable 'x'.

Reorder the terms:
-15x + 7x2 + -1x2 = 15x + x2 + -15x + -1x2

Combine like terms: 7x2 + -1x2 = 6x2
-15x + 6x2 = 15x + x2 + -15x + -1x2

Reorder the terms:
-15x + 6x2 = 15x + -15x + x2 + -1x2

Combine like terms: 15x + -15x = 0
-15x + 6x2 = 0 + x2 + -1x2
-15x + 6x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-15x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '3x'.
3x(-5 + 2x) = 0

Ignore the factor 3.

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 '(-5 + 2x)' equal to zero and attempt to solve: Simplifying -5 + 2x = 0 Solving -5 + 2x = 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 + 2x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 2x = 0 + 5 2x = 0 + 5 Combine like terms: 0 + 5 = 5 2x = 5 Divide each side by '2'. x = 2.5 Simplifying x = 2.5

Solution

x = {0, 2.5}

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