(3-v)(5v+6)=0

Solution for (3-v)(5v+6)=0 equation:

Simplifying
(3 + -1v)(5v + 6) = 0

Reorder the terms:
(3 + -1v)(6 + 5v) = 0

Multiply (3 + -1v) * (6 + 5v)
(3(6 + 5v) + -1v * (6 + 5v)) = 0
((6 * 3 + 5v * 3) + -1v * (6 + 5v)) = 0
((18 + 15v) + -1v * (6 + 5v)) = 0
(18 + 15v + (6 * -1v + 5v * -1v)) = 0
(18 + 15v + (-6v + -5v2)) = 0

Combine like terms: 15v + -6v = 9v
(18 + 9v + -5v2) = 0

Solving
18 + 9v + -5v2 = 0

Solving for variable 'v'.

Factor a trinomial.
(3 + -1v)(6 + 5v) = 0

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

Simplifying
3 + -1v = 0

Solving
3 + -1v = 0

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

Add '-3' to each side of the equation.
3 + -3 + -1v = 0 + -3

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

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

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

Simplifying
v = 3
Subproblem 2
Set the factor '(6 + 5v)' equal to zero and attempt to solve:

Simplifying
6 + 5v = 0

Solving
6 + 5v = 0

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

Add '-6' to each side of the equation.
6 + -6 + 5v = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 5v = 0 + -6
5v = 0 + -6

Combine like terms: 0 + -6 = -6
5v = -6

Divide each side by '5'.
v = -1.2

Simplifying
v = -1.2
Solution
v = {3, -1.2}