7n^2+8n=-1

Solution for 7n^2+8n=-1 equation:

Simplifying
7n2 + 8n = -1

Reorder the terms:
8n + 7n2 = -1

Solving
8n + 7n2 = -1

Solving for variable 'n'.

Reorder the terms:
1 + 8n + 7n2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + 8n + 7n2 = 0

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

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

Simplifying
1 + n = 0

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

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

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

Simplifying
n = -1
Subproblem 2
Set the factor '(1 + 7n)' equal to zero and attempt to solve:

Simplifying
1 + 7n = 0

Solving
1 + 7n = 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 + 7n = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 7n = 0 + -1
7n = 0 + -1

Combine like terms: 0 + -1 = -1
7n = -1

Divide each side by '7'.
n = -0.1428571429

Simplifying
n = -0.1428571429
Solution
n = {-1, -0.1428571429}