4x-2x(3x-7)=6(2x-7)+5x

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Solution for 4x-2x(3x-7)=6(2x-7)+5x equation:


Simplifying
4x + -2x(3x + -7) = 6(2x + -7) + 5x

Reorder the terms:
4x + -2x(-7 + 3x) = 6(2x + -7) + 5x
4x + (-7 * -2x + 3x * -2x) = 6(2x + -7) + 5x
4x + (14x + -6x2) = 6(2x + -7) + 5x

Combine like terms: 4x + 14x = 18x
18x + -6x2 = 6(2x + -7) + 5x

Reorder the terms:
18x + -6x2 = 6(-7 + 2x) + 5x
18x + -6x2 = (-7 * 6 + 2x * 6) + 5x
18x + -6x2 = (-42 + 12x) + 5x

Combine like terms: 12x + 5x = 17x
18x + -6x2 = -42 + 17x

Solving
18x + -6x2 = -42 + 17x

Solving for variable 'x'.

Reorder the terms:
42 + 18x + -17x + -6x2 = -42 + 17x + 42 + -17x

Combine like terms: 18x + -17x = 1x
42 + 1x + -6x2 = -42 + 17x + 42 + -17x

Reorder the terms:
42 + 1x + -6x2 = -42 + 42 + 17x + -17x

Combine like terms: -42 + 42 = 0
42 + 1x + -6x2 = 0 + 17x + -17x
42 + 1x + -6x2 = 17x + -17x

Combine like terms: 17x + -17x = 0
42 + 1x + -6x2 = 0

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
-7 + -0.1666666667x + x2 = 0

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -0.1666666667x + 7 + x2 = 0 + 7

Reorder the terms:
-7 + 7 + -0.1666666667x + x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -0.1666666667x + x2 = 0 + 7
-0.1666666667x + x2 = 0 + 7

Combine like terms: 0 + 7 = 7
-0.1666666667x + x2 = 7

The x term is -0.1666666667x.  Take half its coefficient (-0.08333333335).
Square it (0.006944444447) and add it to both sides.

Add '0.006944444447' to each side of the equation.
-0.1666666667x + 0.006944444447 + x2 = 7 + 0.006944444447

Reorder the terms:
0.006944444447 + -0.1666666667x + x2 = 7 + 0.006944444447

Combine like terms: 7 + 0.006944444447 = 7.006944444447
0.006944444447 + -0.1666666667x + x2 = 7.006944444447

Factor a perfect square on the left side:
(x + -0.08333333335)(x + -0.08333333335) = 7.006944444447

Calculate the square root of the right side: 2.647063362

Break this problem into two subproblems by setting 
(x + -0.08333333335) equal to 2.647063362 and -2.647063362.

Subproblem 1

x + -0.08333333335 = 2.647063362 Simplifying x + -0.08333333335 = 2.647063362 Reorder the terms: -0.08333333335 + x = 2.647063362 Solving -0.08333333335 + x = 2.647063362 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08333333335' to each side of the equation. -0.08333333335 + 0.08333333335 + x = 2.647063362 + 0.08333333335 Combine like terms: -0.08333333335 + 0.08333333335 = 0.00000000000 0.00000000000 + x = 2.647063362 + 0.08333333335 x = 2.647063362 + 0.08333333335 Combine like terms: 2.647063362 + 0.08333333335 = 2.73039669535 x = 2.73039669535 Simplifying x = 2.73039669535

Subproblem 2

x + -0.08333333335 = -2.647063362 Simplifying x + -0.08333333335 = -2.647063362 Reorder the terms: -0.08333333335 + x = -2.647063362 Solving -0.08333333335 + x = -2.647063362 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08333333335' to each side of the equation. -0.08333333335 + 0.08333333335 + x = -2.647063362 + 0.08333333335 Combine like terms: -0.08333333335 + 0.08333333335 = 0.00000000000 0.00000000000 + x = -2.647063362 + 0.08333333335 x = -2.647063362 + 0.08333333335 Combine like terms: -2.647063362 + 0.08333333335 = -2.56373002865 x = -2.56373002865 Simplifying x = -2.56373002865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.73039669535, -2.56373002865}

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