22.5(10-y)27.5y=250

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Solution for 22.5(10-y)27.5y=250 equation:


Simplifying
22.5(10 + -1y) * 27.5y = 250

Reorder the terms for easier multiplication:
22.5 * 27.5y(10 + -1y) = 250

Multiply 22.5 * 27.5
618.75y(10 + -1y) = 250
(10 * 618.75y + -1y * 618.75y) = 250
(6187.5y + -618.75y2) = 250

Solving
6187.5y + -618.75y2 = 250

Solving for variable 'y'.

Reorder the terms:
-250 + 6187.5y + -618.75y2 = 250 + -250

Combine like terms: 250 + -250 = 0
-250 + 6187.5y + -618.75y2 = 0

Begin completing the square.  Divide all terms by
-618.75 the coefficient of the squared term: 

Divide each side by '-618.75'.
0.404040404 + -10y + y2 = 0

Move the constant term to the right:

Add '-0.404040404' to each side of the equation.
0.404040404 + -10y + -0.404040404 + y2 = 0 + -0.404040404

Reorder the terms:
0.404040404 + -0.404040404 + -10y + y2 = 0 + -0.404040404

Combine like terms: 0.404040404 + -0.404040404 = 0.000000000
0.000000000 + -10y + y2 = 0 + -0.404040404
-10y + y2 = 0 + -0.404040404

Combine like terms: 0 + -0.404040404 = -0.404040404
-10y + y2 = -0.404040404

The y term is -10y.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10y + 25 + y2 = -0.404040404 + 25

Reorder the terms:
25 + -10y + y2 = -0.404040404 + 25

Combine like terms: -0.404040404 + 25 = 24.595959596
25 + -10y + y2 = 24.595959596

Factor a perfect square on the left side:
(y + -5)(y + -5) = 24.595959596

Calculate the square root of the right side: 4.959431378

Break this problem into two subproblems by setting 
(y + -5) equal to 4.959431378 and -4.959431378.

Subproblem 1

y + -5 = 4.959431378 Simplifying y + -5 = 4.959431378 Reorder the terms: -5 + y = 4.959431378 Solving -5 + y = 4.959431378 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + y = 4.959431378 + 5 Combine like terms: -5 + 5 = 0 0 + y = 4.959431378 + 5 y = 4.959431378 + 5 Combine like terms: 4.959431378 + 5 = 9.959431378 y = 9.959431378 Simplifying y = 9.959431378

Subproblem 2

y + -5 = -4.959431378 Simplifying y + -5 = -4.959431378 Reorder the terms: -5 + y = -4.959431378 Solving -5 + y = -4.959431378 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + y = -4.959431378 + 5 Combine like terms: -5 + 5 = 0 0 + y = -4.959431378 + 5 y = -4.959431378 + 5 Combine like terms: -4.959431378 + 5 = 0.040568622 y = 0.040568622 Simplifying y = 0.040568622

Solution

The solution to the problem is based on the solutions from the subproblems. y = {9.959431378, 0.040568622}

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