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

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Solution for (3+y)(4y+7)=0 equation:


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

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

Multiply (3 + y) * (7 + 4y)
(3(7 + 4y) + y(7 + 4y)) = 0
((7 * 3 + 4y * 3) + y(7 + 4y)) = 0
((21 + 12y) + y(7 + 4y)) = 0
(21 + 12y + (7 * y + 4y * y)) = 0
(21 + 12y + (7y + 4y2)) = 0

Combine like terms: 12y + 7y = 19y
(21 + 19y + 4y2) = 0

Solving
21 + 19y + 4y2 = 0

Solving for variable 'y'.

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

Subproblem 1

Set the factor '(3 + y)' equal to zero and attempt to solve: Simplifying 3 + y = 0 Solving 3 + y = 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 + y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + y = 0 + -3 y = 0 + -3 Combine like terms: 0 + -3 = -3 y = -3 Simplifying y = -3

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 = {-3, -1.75}

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