12x-3x+11=4x(17-9x)

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Solution for 12x-3x+11=4x(17-9x) equation:


Simplifying
12x + -3x + 11 = 4x(17 + -9x)

Reorder the terms:
11 + 12x + -3x = 4x(17 + -9x)

Combine like terms: 12x + -3x = 9x
11 + 9x = 4x(17 + -9x)
11 + 9x = (17 * 4x + -9x * 4x)
11 + 9x = (68x + -36x2)

Solving
11 + 9x = 68x + -36x2

Solving for variable 'x'.

Combine like terms: 9x + -68x = -59x
11 + -59x + 36x2 = 68x + -36x2 + -68x + 36x2

Reorder the terms:
11 + -59x + 36x2 = 68x + -68x + -36x2 + 36x2

Combine like terms: 68x + -68x = 0
11 + -59x + 36x2 = 0 + -36x2 + 36x2
11 + -59x + 36x2 = -36x2 + 36x2

Combine like terms: -36x2 + 36x2 = 0
11 + -59x + 36x2 = 0

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

Divide each side by '36'.
0.3055555556 + -1.638888889x + x2 = 0

Move the constant term to the right:

Add '-0.3055555556' to each side of the equation.
0.3055555556 + -1.638888889x + -0.3055555556 + x2 = 0 + -0.3055555556

Reorder the terms:
0.3055555556 + -0.3055555556 + -1.638888889x + x2 = 0 + -0.3055555556

Combine like terms: 0.3055555556 + -0.3055555556 = 0.0000000000
0.0000000000 + -1.638888889x + x2 = 0 + -0.3055555556
-1.638888889x + x2 = 0 + -0.3055555556

Combine like terms: 0 + -0.3055555556 = -0.3055555556
-1.638888889x + x2 = -0.3055555556

The x term is -1.638888889x.  Take half its coefficient (-0.8194444445).
Square it (0.6714891976) and add it to both sides.

Add '0.6714891976' to each side of the equation.
-1.638888889x + 0.6714891976 + x2 = -0.3055555556 + 0.6714891976

Reorder the terms:
0.6714891976 + -1.638888889x + x2 = -0.3055555556 + 0.6714891976

Combine like terms: -0.3055555556 + 0.6714891976 = 0.365933642
0.6714891976 + -1.638888889x + x2 = 0.365933642

Factor a perfect square on the left side:
(x + -0.8194444445)(x + -0.8194444445) = 0.365933642

Calculate the square root of the right side: 0.604924493

Break this problem into two subproblems by setting 
(x + -0.8194444445) equal to 0.604924493 and -0.604924493.

Subproblem 1

x + -0.8194444445 = 0.604924493 Simplifying x + -0.8194444445 = 0.604924493 Reorder the terms: -0.8194444445 + x = 0.604924493 Solving -0.8194444445 + x = 0.604924493 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8194444445' to each side of the equation. -0.8194444445 + 0.8194444445 + x = 0.604924493 + 0.8194444445 Combine like terms: -0.8194444445 + 0.8194444445 = 0.0000000000 0.0000000000 + x = 0.604924493 + 0.8194444445 x = 0.604924493 + 0.8194444445 Combine like terms: 0.604924493 + 0.8194444445 = 1.4243689375 x = 1.4243689375 Simplifying x = 1.4243689375

Subproblem 2

x + -0.8194444445 = -0.604924493 Simplifying x + -0.8194444445 = -0.604924493 Reorder the terms: -0.8194444445 + x = -0.604924493 Solving -0.8194444445 + x = -0.604924493 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8194444445' to each side of the equation. -0.8194444445 + 0.8194444445 + x = -0.604924493 + 0.8194444445 Combine like terms: -0.8194444445 + 0.8194444445 = 0.0000000000 0.0000000000 + x = -0.604924493 + 0.8194444445 x = -0.604924493 + 0.8194444445 Combine like terms: -0.604924493 + 0.8194444445 = 0.2145199515 x = 0.2145199515 Simplifying x = 0.2145199515

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4243689375, 0.2145199515}

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