(5n-1)(n+3)=0

Solution for (5n-1)(n+3)=0 equation:

Simplifying
(5n + -1)(n + 3) = 0

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

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

Multiply (-1 + 5n) * (3 + n)
(-1(3 + n) + 5n * (3 + n)) = 0
((3 * -1 + n * -1) + 5n * (3 + n)) = 0
((-3 + -1n) + 5n * (3 + n)) = 0
(-3 + -1n + (3 * 5n + n * 5n)) = 0
(-3 + -1n + (15n + 5n2)) = 0

Combine like terms: -1n + 15n = 14n
(-3 + 14n + 5n2) = 0

Solving
-3 + 14n + 5n2 = 0

Solving for variable 'n'.

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

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

Simplifying
-3 + -1n = 0

Solving
-3 + -1n = 0

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

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

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

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

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

Simplifying
n = -3
Subproblem 2
Set the factor '(1 + -5n)' equal to zero and attempt to solve:

Simplifying
1 + -5n = 0

Solving
1 + -5n = 0

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

Add '-1' to each side of the equation.
1 + -1 + -5n = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -5n = 0 + -1
-5n = 0 + -1

Combine like terms: 0 + -1 = -1
-5n = -1

Divide each side by '-5'.
n = 0.2

Simplifying
n = 0.2
Solution
n = {-3, 0.2}