(3-y)(5y+2)=0

Solution for (3-y)(5y+2)=0 equation:

Simplifying
(3 + -1y)(5y + 2) = 0

Reorder the terms:
(3 + -1y)(2 + 5y) = 0

Multiply (3 + -1y) * (2 + 5y)
(3(2 + 5y) + -1y * (2 + 5y)) = 0
((2 * 3 + 5y * 3) + -1y * (2 + 5y)) = 0
((6 + 15y) + -1y * (2 + 5y)) = 0
(6 + 15y + (2 * -1y + 5y * -1y)) = 0
(6 + 15y + (-2y + -5y2)) = 0

Combine like terms: 15y + -2y = 13y
(6 + 13y + -5y2) = 0

Solving
6 + 13y + -5y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(3 + -1y)(2 + 5y) = 0

Subproblem 1
Set the factor '(3 + -1y)' equal to zero and attempt to solve:

Simplifying
3 + -1y = 0

Solving
3 + -1y = 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 + -1y = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1y = 0 + -3
-1y = 0 + -3

Combine like terms: 0 + -3 = -3
-1y = -3

Divide each side by '-1'.
y = 3

Simplifying
y = 3
Subproblem 2
Set the factor '(2 + 5y)' equal to zero and attempt to solve:

Simplifying
2 + 5y = 0

Solving
2 + 5y = 0

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

Add '-2' to each side of the equation.
2 + -2 + 5y = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 5y = 0 + -2
5y = 0 + -2

Combine like terms: 0 + -2 = -2
5y = -2

Divide each side by '5'.
y = -0.4

Simplifying
y = -0.4
Solution
y = {3, -0.4}