7n^2-31n+30=0

Solution for 7n^2-31n+30=0 equation:

Simplifying
7n2 + -31n + 30 = 0

Reorder the terms:
30 + -31n + 7n2 = 0

Solving
30 + -31n + 7n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(10 + -7n)(3 + -1n) = 0

Subproblem 1
Set the factor '(10 + -7n)' equal to zero and attempt to solve:

Simplifying
10 + -7n = 0

Solving
10 + -7n = 0

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

Add '-10' to each side of the equation.
10 + -10 + -7n = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -7n = 0 + -10
-7n = 0 + -10

Combine like terms: 0 + -10 = -10
-7n = -10

Divide each side by '-7'.
n = 1.428571429

Simplifying
n = 1.428571429
Subproblem 2
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
Solution
n = {1.428571429, 3}