-3(n-11)=-5(n+9)8n

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Solution for -3(n-11)=-5(n+9)8n equation:


Simplifying
-3(n + -11) = -5(n + 9) * 8n

Reorder the terms:
-3(-11 + n) = -5(n + 9) * 8n
(-11 * -3 + n * -3) = -5(n + 9) * 8n
(33 + -3n) = -5(n + 9) * 8n

Reorder the terms:
33 + -3n = -5(9 + n) * 8n

Reorder the terms for easier multiplication:
33 + -3n = -5 * 8n(9 + n)

Multiply -5 * 8
33 + -3n = -40n(9 + n)
33 + -3n = (9 * -40n + n * -40n)
33 + -3n = (-360n + -40n2)

Solving
33 + -3n = -360n + -40n2

Solving for variable 'n'.

Combine like terms: -3n + 360n = 357n
33 + 357n + 40n2 = -360n + -40n2 + 360n + 40n2

Reorder the terms:
33 + 357n + 40n2 = -360n + 360n + -40n2 + 40n2

Combine like terms: -360n + 360n = 0
33 + 357n + 40n2 = 0 + -40n2 + 40n2
33 + 357n + 40n2 = -40n2 + 40n2

Combine like terms: -40n2 + 40n2 = 0
33 + 357n + 40n2 = 0

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

Divide each side by '40'.
0.825 + 8.925n + n2 = 0

Move the constant term to the right:

Add '-0.825' to each side of the equation.
0.825 + 8.925n + -0.825 + n2 = 0 + -0.825

Reorder the terms:
0.825 + -0.825 + 8.925n + n2 = 0 + -0.825

Combine like terms: 0.825 + -0.825 = 0.000
0.000 + 8.925n + n2 = 0 + -0.825
8.925n + n2 = 0 + -0.825

Combine like terms: 0 + -0.825 = -0.825
8.925n + n2 = -0.825

The n term is 8.925n.  Take half its coefficient (4.4625).
Square it (19.91390625) and add it to both sides.

Add '19.91390625' to each side of the equation.
8.925n + 19.91390625 + n2 = -0.825 + 19.91390625

Reorder the terms:
19.91390625 + 8.925n + n2 = -0.825 + 19.91390625

Combine like terms: -0.825 + 19.91390625 = 19.08890625
19.91390625 + 8.925n + n2 = 19.08890625

Factor a perfect square on the left side:
(n + 4.4625)(n + 4.4625) = 19.08890625

Calculate the square root of the right side: 4.369085288

Break this problem into two subproblems by setting 
(n + 4.4625) equal to 4.369085288 and -4.369085288.

Subproblem 1

n + 4.4625 = 4.369085288 Simplifying n + 4.4625 = 4.369085288 Reorder the terms: 4.4625 + n = 4.369085288 Solving 4.4625 + n = 4.369085288 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4.4625' to each side of the equation. 4.4625 + -4.4625 + n = 4.369085288 + -4.4625 Combine like terms: 4.4625 + -4.4625 = 0.0000 0.0000 + n = 4.369085288 + -4.4625 n = 4.369085288 + -4.4625 Combine like terms: 4.369085288 + -4.4625 = -0.093414712 n = -0.093414712 Simplifying n = -0.093414712

Subproblem 2

n + 4.4625 = -4.369085288 Simplifying n + 4.4625 = -4.369085288 Reorder the terms: 4.4625 + n = -4.369085288 Solving 4.4625 + n = -4.369085288 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4.4625' to each side of the equation. 4.4625 + -4.4625 + n = -4.369085288 + -4.4625 Combine like terms: 4.4625 + -4.4625 = 0.0000 0.0000 + n = -4.369085288 + -4.4625 n = -4.369085288 + -4.4625 Combine like terms: -4.369085288 + -4.4625 = -8.831585288 n = -8.831585288 Simplifying n = -8.831585288

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-0.093414712, -8.831585288}

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