(9-y)(2y-1)=0

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Solution for (9-y)(2y-1)=0 equation:


Simplifying
(9 + -1y)(2y + -1) = 0

Reorder the terms:
(9 + -1y)(-1 + 2y) = 0

Multiply (9 + -1y) * (-1 + 2y)
(9(-1 + 2y) + -1y * (-1 + 2y)) = 0
((-1 * 9 + 2y * 9) + -1y * (-1 + 2y)) = 0
((-9 + 18y) + -1y * (-1 + 2y)) = 0
(-9 + 18y + (-1 * -1y + 2y * -1y)) = 0
(-9 + 18y + (1y + -2y2)) = 0

Combine like terms: 18y + 1y = 19y
(-9 + 19y + -2y2) = 0

Solving
-9 + 19y + -2y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-9 + y)(1 + -2y) = 0

Subproblem 1

Set the factor '(-9 + y)' equal to zero and attempt to solve: Simplifying -9 + y = 0 Solving -9 + y = 0 Move all terms containing y to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + y = 0 + 9 Combine like terms: -9 + 9 = 0 0 + y = 0 + 9 y = 0 + 9 Combine like terms: 0 + 9 = 9 y = 9 Simplifying y = 9

Subproblem 2

Set the factor '(1 + -2y)' equal to zero and attempt to solve: Simplifying 1 + -2y = 0 Solving 1 + -2y = 0 Move all terms containing y to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2y = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2y = 0 + -1 -2y = 0 + -1 Combine like terms: 0 + -1 = -1 -2y = -1 Divide each side by '-2'. y = 0.5 Simplifying y = 0.5

Solution

y = {9, 0.5}

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