2x+1-3x+5=3(x+10)x

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Solution for 2x+1-3x+5=3(x+10)x equation:


Simplifying
2x + 1 + -3x + 5 = 3(x + 10) * x

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

Combine like terms: 1 + 5 = 6
6 + 2x + -3x = 3(x + 10) * x

Combine like terms: 2x + -3x = -1x
6 + -1x = 3(x + 10) * x

Reorder the terms:
6 + -1x = 3(10 + x) * x

Reorder the terms for easier multiplication:
6 + -1x = 3x(10 + x)
6 + -1x = (10 * 3x + x * 3x)
6 + -1x = (30x + 3x2)

Solving
6 + -1x = 30x + 3x2

Solving for variable 'x'.

Combine like terms: -1x + -30x = -31x
6 + -31x + -3x2 = 30x + 3x2 + -30x + -3x2

Reorder the terms:
6 + -31x + -3x2 = 30x + -30x + 3x2 + -3x2

Combine like terms: 30x + -30x = 0
6 + -31x + -3x2 = 0 + 3x2 + -3x2
6 + -31x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
6 + -31x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-2 + 10.33333333x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 10.33333333x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + 10.33333333x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 10.33333333x + x2 = 0 + 2
10.33333333x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
10.33333333x + x2 = 2

The x term is 10.33333333x.  Take half its coefficient (5.166666665).
Square it (26.69444443) and add it to both sides.

Add '26.69444443' to each side of the equation.
10.33333333x + 26.69444443 + x2 = 2 + 26.69444443

Reorder the terms:
26.69444443 + 10.33333333x + x2 = 2 + 26.69444443

Combine like terms: 2 + 26.69444443 = 28.69444443
26.69444443 + 10.33333333x + x2 = 28.69444443

Factor a perfect square on the left side:
(x + 5.166666665)(x + 5.166666665) = 28.69444443

Calculate the square root of the right side: 5.356719559

Break this problem into two subproblems by setting 
(x + 5.166666665) equal to 5.356719559 and -5.356719559.

Subproblem 1

x + 5.166666665 = 5.356719559 Simplifying x + 5.166666665 = 5.356719559 Reorder the terms: 5.166666665 + x = 5.356719559 Solving 5.166666665 + x = 5.356719559 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.166666665' to each side of the equation. 5.166666665 + -5.166666665 + x = 5.356719559 + -5.166666665 Combine like terms: 5.166666665 + -5.166666665 = 0.000000000 0.000000000 + x = 5.356719559 + -5.166666665 x = 5.356719559 + -5.166666665 Combine like terms: 5.356719559 + -5.166666665 = 0.190052894 x = 0.190052894 Simplifying x = 0.190052894

Subproblem 2

x + 5.166666665 = -5.356719559 Simplifying x + 5.166666665 = -5.356719559 Reorder the terms: 5.166666665 + x = -5.356719559 Solving 5.166666665 + x = -5.356719559 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.166666665' to each side of the equation. 5.166666665 + -5.166666665 + x = -5.356719559 + -5.166666665 Combine like terms: 5.166666665 + -5.166666665 = 0.000000000 0.000000000 + x = -5.356719559 + -5.166666665 x = -5.356719559 + -5.166666665 Combine like terms: -5.356719559 + -5.166666665 = -10.523386224 x = -10.523386224 Simplifying x = -10.523386224

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.190052894, -10.523386224}

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