15x^2-4=-7x

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Solution for 15x^2-4=-7x equation:


Simplifying
15x2 + -4 = -7x

Reorder the terms:
-4 + 15x2 = -7x

Solving
-4 + 15x2 = -7x

Solving for variable 'x'.

Reorder the terms:
-4 + 7x + 15x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
-4 + 7x + 15x2 = 0

Factor a trinomial.
(-4 + -5x)(1 + -3x) = 0

Subproblem 1

Set the factor '(-4 + -5x)' equal to zero and attempt to solve: Simplifying -4 + -5x = 0 Solving -4 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -5x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -5x = 0 + 4 -5x = 0 + 4 Combine like terms: 0 + 4 = 4 -5x = 4 Divide each side by '-5'. x = -0.8 Simplifying x = -0.8

Subproblem 2

Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 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 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333

Solution

x = {-0.8, 0.3333333333}

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