(4y-3)(9-y)=0

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Solution for (4y-3)(9-y)=0 equation:


Simplifying
(4y + -3)(9 + -1y) = 0

Reorder the terms:
(-3 + 4y)(9 + -1y) = 0

Multiply (-3 + 4y) * (9 + -1y)
(-3(9 + -1y) + 4y * (9 + -1y)) = 0
((9 * -3 + -1y * -3) + 4y * (9 + -1y)) = 0
((-27 + 3y) + 4y * (9 + -1y)) = 0
(-27 + 3y + (9 * 4y + -1y * 4y)) = 0
(-27 + 3y + (36y + -4y2)) = 0

Combine like terms: 3y + 36y = 39y
(-27 + 39y + -4y2) = 0

Solving
-27 + 39y + -4y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-9 + y)(3 + -4y) = 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 '(3 + -4y)' equal to zero and attempt to solve: Simplifying 3 + -4y = 0 Solving 3 + -4y = 0 Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -4y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4y = 0 + -3 -4y = 0 + -3 Combine like terms: 0 + -3 = -3 -4y = -3 Divide each side by '-4'. y = 0.75 Simplifying y = 0.75

Solution

y = {9, 0.75}

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