(8x+7)4x=15

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Solution for (8x+7)4x=15 equation:


Simplifying
(8x + 7) * 4x = 15

Reorder the terms:
(7 + 8x) * 4x = 15

Reorder the terms for easier multiplication:
4x(7 + 8x) = 15
(7 * 4x + 8x * 4x) = 15
(28x + 32x2) = 15

Solving
28x + 32x2 = 15

Solving for variable 'x'.

Reorder the terms:
-15 + 28x + 32x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + 28x + 32x2 = 0

Factor a trinomial.
(-5 + -4x)(3 + -8x) = 0

Subproblem 1

Set the factor '(-5 + -4x)' equal to zero and attempt to solve: Simplifying -5 + -4x = 0 Solving -5 + -4x = 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 + -4x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -4x = 0 + 5 -4x = 0 + 5 Combine like terms: 0 + 5 = 5 -4x = 5 Divide each side by '-4'. x = -1.25 Simplifying x = -1.25

Subproblem 2

Set the factor '(3 + -8x)' equal to zero and attempt to solve: Simplifying 3 + -8x = 0 Solving 3 + -8x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -8x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -8x = 0 + -3 -8x = 0 + -3 Combine like terms: 0 + -3 = -3 -8x = -3 Divide each side by '-8'. x = 0.375 Simplifying x = 0.375

Solution

x = {-1.25, 0.375}

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