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

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


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

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

Multiply (7 + 4y) * (4 + y)
(7(4 + y) + 4y * (4 + y)) = 0
((4 * 7 + y * 7) + 4y * (4 + y)) = 0
((28 + 7y) + 4y * (4 + y)) = 0
(28 + 7y + (4 * 4y + y * 4y)) = 0
(28 + 7y + (16y + 4y2)) = 0

Combine like terms: 7y + 16y = 23y
(28 + 23y + 4y2) = 0

Solving
28 + 23y + 4y2 = 0

Solving for variable 'y'.

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


Subproblem 1
Set the factor '(4 + y)' equal to zero and attempt to solve:

Simplifying
4 + y = 0

Solving
4 + y = 0

Move all terms containing y to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + y = 0 + -4

Combine like terms: 4 + -4 = 0
0 + y = 0 + -4
y = 0 + -4

Combine like terms: 0 + -4 = -4
y = -4

Simplifying
y = -4

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 = {-4, -1.75}

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