7x^2+12x-14=18-8x

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Solution for 7x^2+12x-14=18-8x equation:


Simplifying
7x2 + 12x + -14 = 18 + -8x

Reorder the terms:
-14 + 12x + 7x2 = 18 + -8x

Solving
-14 + 12x + 7x2 = 18 + -8x

Solving for variable 'x'.

Reorder the terms:
-14 + -18 + 12x + 8x + 7x2 = 18 + -8x + -18 + 8x

Combine like terms: -14 + -18 = -32
-32 + 12x + 8x + 7x2 = 18 + -8x + -18 + 8x

Combine like terms: 12x + 8x = 20x
-32 + 20x + 7x2 = 18 + -8x + -18 + 8x

Reorder the terms:
-32 + 20x + 7x2 = 18 + -18 + -8x + 8x

Combine like terms: 18 + -18 = 0
-32 + 20x + 7x2 = 0 + -8x + 8x
-32 + 20x + 7x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
-32 + 20x + 7x2 = 0

Factor a trinomial.
(-4 + -1x)(8 + -7x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 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 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(8 + -7x)' equal to zero and attempt to solve: Simplifying 8 + -7x = 0 Solving 8 + -7x = 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 + -7x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -7x = 0 + -8 -7x = 0 + -8 Combine like terms: 0 + -8 = -8 -7x = -8 Divide each side by '-7'. x = 1.142857143 Simplifying x = 1.142857143

Solution

x = {-4, 1.142857143}

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