(y+4)(2y+3)=7

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Solution for (y+4)(2y+3)=7 equation:


Simplifying
(y + 4)(2y + 3) = 7

Reorder the terms:
(4 + y)(2y + 3) = 7

Reorder the terms:
(4 + y)(3 + 2y) = 7

Multiply (4 + y) * (3 + 2y)
(4(3 + 2y) + y(3 + 2y)) = 7
((3 * 4 + 2y * 4) + y(3 + 2y)) = 7
((12 + 8y) + y(3 + 2y)) = 7
(12 + 8y + (3 * y + 2y * y)) = 7
(12 + 8y + (3y + 2y2)) = 7

Combine like terms: 8y + 3y = 11y
(12 + 11y + 2y2) = 7

Solving
12 + 11y + 2y2 = 7

Solving for variable 'y'.

Reorder the terms:
12 + -7 + 11y + 2y2 = 7 + -7

Combine like terms: 12 + -7 = 5
5 + 11y + 2y2 = 7 + -7

Combine like terms: 7 + -7 = 0
5 + 11y + 2y2 = 0

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

Subproblem 1

Set the factor '(5 + y)' equal to zero and attempt to solve: Simplifying 5 + y = 0 Solving 5 + y = 0 Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + y = 0 + -5 y = 0 + -5 Combine like terms: 0 + -5 = -5 y = -5 Simplifying y = -5

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 = {-5, -0.5}

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