5(x-2)-7(x+1)=9x(3-2x)

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Solution for 5(x-2)-7(x+1)=9x(3-2x) equation:


Simplifying
5(x + -2) + -7(x + 1) = 9x(3 + -2x)

Reorder the terms:
5(-2 + x) + -7(x + 1) = 9x(3 + -2x)
(-2 * 5 + x * 5) + -7(x + 1) = 9x(3 + -2x)
(-10 + 5x) + -7(x + 1) = 9x(3 + -2x)

Reorder the terms:
-10 + 5x + -7(1 + x) = 9x(3 + -2x)
-10 + 5x + (1 * -7 + x * -7) = 9x(3 + -2x)
-10 + 5x + (-7 + -7x) = 9x(3 + -2x)

Reorder the terms:
-10 + -7 + 5x + -7x = 9x(3 + -2x)

Combine like terms: -10 + -7 = -17
-17 + 5x + -7x = 9x(3 + -2x)

Combine like terms: 5x + -7x = -2x
-17 + -2x = 9x(3 + -2x)
-17 + -2x = (3 * 9x + -2x * 9x)
-17 + -2x = (27x + -18x2)

Solving
-17 + -2x = 27x + -18x2

Solving for variable 'x'.

Combine like terms: -2x + -27x = -29x
-17 + -29x + 18x2 = 27x + -18x2 + -27x + 18x2

Reorder the terms:
-17 + -29x + 18x2 = 27x + -27x + -18x2 + 18x2

Combine like terms: 27x + -27x = 0
-17 + -29x + 18x2 = 0 + -18x2 + 18x2
-17 + -29x + 18x2 = -18x2 + 18x2

Combine like terms: -18x2 + 18x2 = 0
-17 + -29x + 18x2 = 0

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

Divide each side by '18'.
-0.9444444444 + -1.611111111x + x2 = 0

Move the constant term to the right:

Add '0.9444444444' to each side of the equation.
-0.9444444444 + -1.611111111x + 0.9444444444 + x2 = 0 + 0.9444444444

Reorder the terms:
-0.9444444444 + 0.9444444444 + -1.611111111x + x2 = 0 + 0.9444444444

Combine like terms: -0.9444444444 + 0.9444444444 = 0.0000000000
0.0000000000 + -1.611111111x + x2 = 0 + 0.9444444444
-1.611111111x + x2 = 0 + 0.9444444444

Combine like terms: 0 + 0.9444444444 = 0.9444444444
-1.611111111x + x2 = 0.9444444444

The x term is -1.611111111x.  Take half its coefficient (-0.8055555555).
Square it (0.6489197530) and add it to both sides.

Add '0.6489197530' to each side of the equation.
-1.611111111x + 0.6489197530 + x2 = 0.9444444444 + 0.6489197530

Reorder the terms:
0.6489197530 + -1.611111111x + x2 = 0.9444444444 + 0.6489197530

Combine like terms: 0.9444444444 + 0.6489197530 = 1.5933641974
0.6489197530 + -1.611111111x + x2 = 1.5933641974

Factor a perfect square on the left side:
(x + -0.8055555555)(x + -0.8055555555) = 1.5933641974

Calculate the square root of the right side: 1.262285307

Break this problem into two subproblems by setting 
(x + -0.8055555555) equal to 1.262285307 and -1.262285307.

Subproblem 1

x + -0.8055555555 = 1.262285307 Simplifying x + -0.8055555555 = 1.262285307 Reorder the terms: -0.8055555555 + x = 1.262285307 Solving -0.8055555555 + x = 1.262285307 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8055555555' to each side of the equation. -0.8055555555 + 0.8055555555 + x = 1.262285307 + 0.8055555555 Combine like terms: -0.8055555555 + 0.8055555555 = 0.0000000000 0.0000000000 + x = 1.262285307 + 0.8055555555 x = 1.262285307 + 0.8055555555 Combine like terms: 1.262285307 + 0.8055555555 = 2.0678408625 x = 2.0678408625 Simplifying x = 2.0678408625

Subproblem 2

x + -0.8055555555 = -1.262285307 Simplifying x + -0.8055555555 = -1.262285307 Reorder the terms: -0.8055555555 + x = -1.262285307 Solving -0.8055555555 + x = -1.262285307 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8055555555' to each side of the equation. -0.8055555555 + 0.8055555555 + x = -1.262285307 + 0.8055555555 Combine like terms: -0.8055555555 + 0.8055555555 = 0.0000000000 0.0000000000 + x = -1.262285307 + 0.8055555555 x = -1.262285307 + 0.8055555555 Combine like terms: -1.262285307 + 0.8055555555 = -0.4567297515 x = -0.4567297515 Simplifying x = -0.4567297515

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.0678408625, -0.4567297515}

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