8(x-5)6x=7(2x+4)-13

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Solution for 8(x-5)6x=7(2x+4)-13 equation:


Simplifying
8(x + -5) * 6x = 7(2x + 4) + -13

Reorder the terms:
8(-5 + x) * 6x = 7(2x + 4) + -13

Reorder the terms for easier multiplication:
8 * 6x(-5 + x) = 7(2x + 4) + -13

Multiply 8 * 6
48x(-5 + x) = 7(2x + 4) + -13
(-5 * 48x + x * 48x) = 7(2x + 4) + -13
(-240x + 48x2) = 7(2x + 4) + -13

Reorder the terms:
-240x + 48x2 = 7(4 + 2x) + -13
-240x + 48x2 = (4 * 7 + 2x * 7) + -13
-240x + 48x2 = (28 + 14x) + -13

Reorder the terms:
-240x + 48x2 = 28 + -13 + 14x

Combine like terms: 28 + -13 = 15
-240x + 48x2 = 15 + 14x

Solving
-240x + 48x2 = 15 + 14x

Solving for variable 'x'.

Reorder the terms:
-15 + -240x + -14x + 48x2 = 15 + 14x + -15 + -14x

Combine like terms: -240x + -14x = -254x
-15 + -254x + 48x2 = 15 + 14x + -15 + -14x

Reorder the terms:
-15 + -254x + 48x2 = 15 + -15 + 14x + -14x

Combine like terms: 15 + -15 = 0
-15 + -254x + 48x2 = 0 + 14x + -14x
-15 + -254x + 48x2 = 14x + -14x

Combine like terms: 14x + -14x = 0
-15 + -254x + 48x2 = 0

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

Divide each side by '48'.
-0.3125 + -5.291666667x + x2 = 0

Move the constant term to the right:

Add '0.3125' to each side of the equation.
-0.3125 + -5.291666667x + 0.3125 + x2 = 0 + 0.3125

Reorder the terms:
-0.3125 + 0.3125 + -5.291666667x + x2 = 0 + 0.3125

Combine like terms: -0.3125 + 0.3125 = 0.0000
0.0000 + -5.291666667x + x2 = 0 + 0.3125
-5.291666667x + x2 = 0 + 0.3125

Combine like terms: 0 + 0.3125 = 0.3125
-5.291666667x + x2 = 0.3125

The x term is -5.291666667x.  Take half its coefficient (-2.645833334).
Square it (7.000434031) and add it to both sides.

Add '7.000434031' to each side of the equation.
-5.291666667x + 7.000434031 + x2 = 0.3125 + 7.000434031

Reorder the terms:
7.000434031 + -5.291666667x + x2 = 0.3125 + 7.000434031

Combine like terms: 0.3125 + 7.000434031 = 7.312934031
7.000434031 + -5.291666667x + x2 = 7.312934031

Factor a perfect square on the left side:
(x + -2.645833334)(x + -2.645833334) = 7.312934031

Calculate the square root of the right side: 2.704243708

Break this problem into two subproblems by setting 
(x + -2.645833334) equal to 2.704243708 and -2.704243708.

Subproblem 1

x + -2.645833334 = 2.704243708 Simplifying x + -2.645833334 = 2.704243708 Reorder the terms: -2.645833334 + x = 2.704243708 Solving -2.645833334 + x = 2.704243708 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.645833334' to each side of the equation. -2.645833334 + 2.645833334 + x = 2.704243708 + 2.645833334 Combine like terms: -2.645833334 + 2.645833334 = 0.000000000 0.000000000 + x = 2.704243708 + 2.645833334 x = 2.704243708 + 2.645833334 Combine like terms: 2.704243708 + 2.645833334 = 5.350077042 x = 5.350077042 Simplifying x = 5.350077042

Subproblem 2

x + -2.645833334 = -2.704243708 Simplifying x + -2.645833334 = -2.704243708 Reorder the terms: -2.645833334 + x = -2.704243708 Solving -2.645833334 + x = -2.704243708 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.645833334' to each side of the equation. -2.645833334 + 2.645833334 + x = -2.704243708 + 2.645833334 Combine like terms: -2.645833334 + 2.645833334 = 0.000000000 0.000000000 + x = -2.704243708 + 2.645833334 x = -2.704243708 + 2.645833334 Combine like terms: -2.704243708 + 2.645833334 = -0.058410374 x = -0.058410374 Simplifying x = -0.058410374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.350077042, -0.058410374}

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