7(4y-1)2y=1

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Solution for 7(4y-1)2y=1 equation:


Simplifying
7(4y + -1) * 2y = 1

Reorder the terms:
7(-1 + 4y) * 2y = 1

Reorder the terms for easier multiplication:
7 * 2y(-1 + 4y) = 1

Multiply 7 * 2
14y(-1 + 4y) = 1
(-1 * 14y + 4y * 14y) = 1
(-14y + 56y2) = 1

Solving
-14y + 56y2 = 1

Solving for variable 'y'.

Reorder the terms:
-1 + -14y + 56y2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + -14y + 56y2 = 0

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

Divide each side by '56'.
-0.01785714286 + -0.25y + y2 = 0

Move the constant term to the right:

Add '0.01785714286' to each side of the equation.
-0.01785714286 + -0.25y + 0.01785714286 + y2 = 0 + 0.01785714286

Reorder the terms:
-0.01785714286 + 0.01785714286 + -0.25y + y2 = 0 + 0.01785714286

Combine like terms: -0.01785714286 + 0.01785714286 = 0.00000000000
0.00000000000 + -0.25y + y2 = 0 + 0.01785714286
-0.25y + y2 = 0 + 0.01785714286

Combine like terms: 0 + 0.01785714286 = 0.01785714286
-0.25y + y2 = 0.01785714286

The y term is -0.25y.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25y + 0.015625 + y2 = 0.01785714286 + 0.015625

Reorder the terms:
0.015625 + -0.25y + y2 = 0.01785714286 + 0.015625

Combine like terms: 0.01785714286 + 0.015625 = 0.03348214286
0.015625 + -0.25y + y2 = 0.03348214286

Factor a perfect square on the left side:
(y + -0.125)(y + -0.125) = 0.03348214286

Calculate the square root of the right side: 0.182981264

Break this problem into two subproblems by setting 
(y + -0.125) equal to 0.182981264 and -0.182981264.

Subproblem 1

y + -0.125 = 0.182981264 Simplifying y + -0.125 = 0.182981264 Reorder the terms: -0.125 + y = 0.182981264 Solving -0.125 + y = 0.182981264 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + y = 0.182981264 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + y = 0.182981264 + 0.125 y = 0.182981264 + 0.125 Combine like terms: 0.182981264 + 0.125 = 0.307981264 y = 0.307981264 Simplifying y = 0.307981264

Subproblem 2

y + -0.125 = -0.182981264 Simplifying y + -0.125 = -0.182981264 Reorder the terms: -0.125 + y = -0.182981264 Solving -0.125 + y = -0.182981264 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + y = -0.182981264 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + y = -0.182981264 + 0.125 y = -0.182981264 + 0.125 Combine like terms: -0.182981264 + 0.125 = -0.057981264 y = -0.057981264 Simplifying y = -0.057981264

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.307981264, -0.057981264}

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