(3y+8)(9+y)=0

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Solution for (3y+8)(9+y)=0 equation:


Simplifying
(3y + 8)(9 + y) = 0

Reorder the terms:
(8 + 3y)(9 + y) = 0

Multiply (8 + 3y) * (9 + y)
(8(9 + y) + 3y * (9 + y)) = 0
((9 * 8 + y * 8) + 3y * (9 + y)) = 0
((72 + 8y) + 3y * (9 + y)) = 0
(72 + 8y + (9 * 3y + y * 3y)) = 0
(72 + 8y + (27y + 3y2)) = 0

Combine like terms: 8y + 27y = 35y
(72 + 35y + 3y2) = 0

Solving
72 + 35y + 3y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(9 + y)(8 + 3y) = 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 '(8 + 3y)' equal to zero and attempt to solve: Simplifying 8 + 3y = 0 Solving 8 + 3y = 0 Move all terms containing y to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 3y = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3y = 0 + -8 3y = 0 + -8 Combine like terms: 0 + -8 = -8 3y = -8 Divide each side by '3'. y = -2.666666667 Simplifying y = -2.666666667

Solution

y = {-9, -2.666666667}

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