5(x-4)3x-9x=6-(2x+5)+8x

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Solution for 5(x-4)3x-9x=6-(2x+5)+8x equation:


Simplifying
5(x + -4) * 3x + -9x = 6 + -1(2x + 5) + 8x

Reorder the terms:
5(-4 + x) * 3x + -9x = 6 + -1(2x + 5) + 8x

Reorder the terms for easier multiplication:
5 * 3x(-4 + x) + -9x = 6 + -1(2x + 5) + 8x

Multiply 5 * 3
15x(-4 + x) + -9x = 6 + -1(2x + 5) + 8x
(-4 * 15x + x * 15x) + -9x = 6 + -1(2x + 5) + 8x
(-60x + 15x2) + -9x = 6 + -1(2x + 5) + 8x

Reorder the terms:
-60x + -9x + 15x2 = 6 + -1(2x + 5) + 8x

Combine like terms: -60x + -9x = -69x
-69x + 15x2 = 6 + -1(2x + 5) + 8x

Reorder the terms:
-69x + 15x2 = 6 + -1(5 + 2x) + 8x
-69x + 15x2 = 6 + (5 * -1 + 2x * -1) + 8x
-69x + 15x2 = 6 + (-5 + -2x) + 8x

Combine like terms: 6 + -5 = 1
-69x + 15x2 = 1 + -2x + 8x

Combine like terms: -2x + 8x = 6x
-69x + 15x2 = 1 + 6x

Solving
-69x + 15x2 = 1 + 6x

Solving for variable 'x'.

Reorder the terms:
-1 + -69x + -6x + 15x2 = 1 + 6x + -1 + -6x

Combine like terms: -69x + -6x = -75x
-1 + -75x + 15x2 = 1 + 6x + -1 + -6x

Reorder the terms:
-1 + -75x + 15x2 = 1 + -1 + 6x + -6x

Combine like terms: 1 + -1 = 0
-1 + -75x + 15x2 = 0 + 6x + -6x
-1 + -75x + 15x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-1 + -75x + 15x2 = 0

Begin completing the square.  Divide all terms by
15 the coefficient of the squared term: 

Divide each side by '15'.
-0.06666666667 + -5x + x2 = 0

Move the constant term to the right:

Add '0.06666666667' to each side of the equation.
-0.06666666667 + -5x + 0.06666666667 + x2 = 0 + 0.06666666667

Reorder the terms:
-0.06666666667 + 0.06666666667 + -5x + x2 = 0 + 0.06666666667

Combine like terms: -0.06666666667 + 0.06666666667 = 0.00000000000
0.00000000000 + -5x + x2 = 0 + 0.06666666667
-5x + x2 = 0 + 0.06666666667

Combine like terms: 0 + 0.06666666667 = 0.06666666667
-5x + x2 = 0.06666666667

The x term is -5x.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x + 6.25 + x2 = 0.06666666667 + 6.25

Reorder the terms:
6.25 + -5x + x2 = 0.06666666667 + 6.25

Combine like terms: 0.06666666667 + 6.25 = 6.31666666667
6.25 + -5x + x2 = 6.31666666667

Factor a perfect square on the left side:
(x + -2.5)(x + -2.5) = 6.31666666667

Calculate the square root of the right side: 2.513297966

Break this problem into two subproblems by setting 
(x + -2.5) equal to 2.513297966 and -2.513297966.

Subproblem 1

x + -2.5 = 2.513297966 Simplifying x + -2.5 = 2.513297966 Reorder the terms: -2.5 + x = 2.513297966 Solving -2.5 + x = 2.513297966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.513297966 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.513297966 + 2.5 x = 2.513297966 + 2.5 Combine like terms: 2.513297966 + 2.5 = 5.013297966 x = 5.013297966 Simplifying x = 5.013297966

Subproblem 2

x + -2.5 = -2.513297966 Simplifying x + -2.5 = -2.513297966 Reorder the terms: -2.5 + x = -2.513297966 Solving -2.5 + x = -2.513297966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.513297966 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.513297966 + 2.5 x = -2.513297966 + 2.5 Combine like terms: -2.513297966 + 2.5 = -0.013297966 x = -0.013297966 Simplifying x = -0.013297966

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.013297966, -0.013297966}

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