7x^2-5x=12

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Solution for 7x^2-5x=12 equation:


Simplifying
7x2 + -5x = 12

Reorder the terms:
-5x + 7x2 = 12

Solving
-5x + 7x2 = 12

Solving for variable 'x'.

Reorder the terms:
-12 + -5x + 7x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + -5x + 7x2 = 0

Factor a trinomial.
(-1 + -1x)(12 + -7x) = 0

Subproblem 1

Set the factor '(-1 + -1x)' equal to zero and attempt to solve: Simplifying -1 + -1x = 0 Solving -1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1x = 0 + 1 -1x = 0 + 1 Combine like terms: 0 + 1 = 1 -1x = 1 Divide each side by '-1'. x = -1 Simplifying x = -1

Subproblem 2

Set the factor '(12 + -7x)' equal to zero and attempt to solve: Simplifying 12 + -7x = 0 Solving 12 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -7x = 0 + -12 Combine like terms: 12 + -12 = 0 0 + -7x = 0 + -12 -7x = 0 + -12 Combine like terms: 0 + -12 = -12 -7x = -12 Divide each side by '-7'. x = 1.714285714 Simplifying x = 1.714285714

Solution

x = {-1, 1.714285714}

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