(4y+7)(8+y)=0

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Solution for (4y+7)(8+y)=0 equation:


Simplifying
(4y + 7)(8 + y) = 0

Reorder the terms:
(7 + 4y)(8 + y) = 0

Multiply (7 + 4y) * (8 + y)
(7(8 + y) + 4y * (8 + y)) = 0
((8 * 7 + y * 7) + 4y * (8 + y)) = 0
((56 + 7y) + 4y * (8 + y)) = 0
(56 + 7y + (8 * 4y + y * 4y)) = 0
(56 + 7y + (32y + 4y2)) = 0

Combine like terms: 7y + 32y = 39y
(56 + 39y + 4y2) = 0

Solving
56 + 39y + 4y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(8 + y)(7 + 4y) = 0

Subproblem 1

Set the factor '(8 + y)' equal to zero and attempt to solve: Simplifying 8 + y = 0 Solving 8 + y = 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 + y = 0 + -8 Combine like terms: 8 + -8 = 0 0 + y = 0 + -8 y = 0 + -8 Combine like terms: 0 + -8 = -8 y = -8 Simplifying y = -8

Subproblem 2

Set the factor '(7 + 4y)' equal to zero and attempt to solve: Simplifying 7 + 4y = 0 Solving 7 + 4y = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 4y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4y = 0 + -7 4y = 0 + -7 Combine like terms: 0 + -7 = -7 4y = -7 Divide each side by '4'. y = -1.75 Simplifying y = -1.75

Solution

y = {-8, -1.75}

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