(4-y)(3y+8)=0

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Solution for (4-y)(3y+8)=0 equation: 


Simplifying
(4 + -1y)(3y + 8) = 0

Reorder the terms:
(4 + -1y)(8 + 3y) = 0

Multiply (4 + -1y) * (8 + 3y)
(4(8 + 3y) + -1y * (8 + 3y)) = 0
((8 * 4 + 3y * 4) + -1y * (8 + 3y)) = 0
((32 + 12y) + -1y * (8 + 3y)) = 0
(32 + 12y + (8 * -1y + 3y * -1y)) = 0
(32 + 12y + (-8y + -3y2)) = 0

Combine like terms: 12y + -8y = 4y
(32 + 4y + -3y2) = 0

Solving
32 + 4y + -3y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(4 + -1y)(8 + 3y) = 0


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

Simplifying
4 + -1y = 0

Solving
4 + -1y = 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 + -1y = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1y = 0 + -4
-1y = 0 + -4

Combine like terms: 0 + -4 = -4
-1y = -4

Divide each side by '-1'.
y = 4

Simplifying
y = 4

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 = {4, -2.666666667}

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