7x-10=6x(11-2x)

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Solution for 7x-10=6x(11-2x) equation:


Simplifying
7x + -10 = 6x(11 + -2x)

Reorder the terms:
-10 + 7x = 6x(11 + -2x)
-10 + 7x = (11 * 6x + -2x * 6x)
-10 + 7x = (66x + -12x2)

Solving
-10 + 7x = 66x + -12x2

Solving for variable 'x'.

Combine like terms: 7x + -66x = -59x
-10 + -59x + 12x2 = 66x + -12x2 + -66x + 12x2

Reorder the terms:
-10 + -59x + 12x2 = 66x + -66x + -12x2 + 12x2

Combine like terms: 66x + -66x = 0
-10 + -59x + 12x2 = 0 + -12x2 + 12x2
-10 + -59x + 12x2 = -12x2 + 12x2

Combine like terms: -12x2 + 12x2 = 0
-10 + -59x + 12x2 = 0

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

Divide each side by '12'.
-0.8333333333 + -4.916666667x + x2 = 0

Move the constant term to the right:

Add '0.8333333333' to each side of the equation.
-0.8333333333 + -4.916666667x + 0.8333333333 + x2 = 0 + 0.8333333333

Reorder the terms:
-0.8333333333 + 0.8333333333 + -4.916666667x + x2 = 0 + 0.8333333333

Combine like terms: -0.8333333333 + 0.8333333333 = 0.0000000000
0.0000000000 + -4.916666667x + x2 = 0 + 0.8333333333
-4.916666667x + x2 = 0 + 0.8333333333

Combine like terms: 0 + 0.8333333333 = 0.8333333333
-4.916666667x + x2 = 0.8333333333

The x term is -4.916666667x.  Take half its coefficient (-2.458333334).
Square it (6.043402781) and add it to both sides.

Add '6.043402781' to each side of the equation.
-4.916666667x + 6.043402781 + x2 = 0.8333333333 + 6.043402781

Reorder the terms:
6.043402781 + -4.916666667x + x2 = 0.8333333333 + 6.043402781

Combine like terms: 0.8333333333 + 6.043402781 = 6.8767361143
6.043402781 + -4.916666667x + x2 = 6.8767361143

Factor a perfect square on the left side:
(x + -2.458333334)(x + -2.458333334) = 6.8767361143

Calculate the square root of the right side: 2.622353164

Break this problem into two subproblems by setting 
(x + -2.458333334) equal to 2.622353164 and -2.622353164.

Subproblem 1

x + -2.458333334 = 2.622353164 Simplifying x + -2.458333334 = 2.622353164 Reorder the terms: -2.458333334 + x = 2.622353164 Solving -2.458333334 + x = 2.622353164 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.458333334' to each side of the equation. -2.458333334 + 2.458333334 + x = 2.622353164 + 2.458333334 Combine like terms: -2.458333334 + 2.458333334 = 0.000000000 0.000000000 + x = 2.622353164 + 2.458333334 x = 2.622353164 + 2.458333334 Combine like terms: 2.622353164 + 2.458333334 = 5.080686498 x = 5.080686498 Simplifying x = 5.080686498

Subproblem 2

x + -2.458333334 = -2.622353164 Simplifying x + -2.458333334 = -2.622353164 Reorder the terms: -2.458333334 + x = -2.622353164 Solving -2.458333334 + x = -2.622353164 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.458333334' to each side of the equation. -2.458333334 + 2.458333334 + x = -2.622353164 + 2.458333334 Combine like terms: -2.458333334 + 2.458333334 = 0.000000000 0.000000000 + x = -2.622353164 + 2.458333334 x = -2.622353164 + 2.458333334 Combine like terms: -2.622353164 + 2.458333334 = -0.16401983 x = -0.16401983 Simplifying x = -0.16401983

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.080686498, -0.16401983}

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