7n^2+61n-90=0

Solution for 7n^2+61n-90=0 equation:

Simplifying
7n2 + 61n + -90 = 0

Reorder the terms:
-90 + 61n + 7n2 = 0

Solving
-90 + 61n + 7n2 = 0

Solving for variable 'n'.

Factor a trinomial.
(-10 + -1n)(9 + -7n) = 0

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

Simplifying
-10 + -1n = 0

Solving
-10 + -1n = 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 + -1n = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -1n = 0 + 10
-1n = 0 + 10

Combine like terms: 0 + 10 = 10
-1n = 10

Divide each side by '-1'.
n = -10

Simplifying
n = -10
Subproblem 2
Set the factor '(9 + -7n)' equal to zero and attempt to solve:

Simplifying
9 + -7n = 0

Solving
9 + -7n = 0

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

Add '-9' to each side of the equation.
9 + -9 + -7n = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -7n = 0 + -9
-7n = 0 + -9

Combine like terms: 0 + -9 = -9
-7n = -9

Divide each side by '-7'.
n = 1.285714286

Simplifying
n = 1.285714286
Solution
n = {-10, 1.285714286}