5/8+3/4

_______
-2/3- 5/6

First, we'll find a common denominator for both fractions in the numerator and in the denominator:

Numerator:

- 5/8 + 3/4 = 5/8 + 6/8 = 11/8

Denominator:

- -2/3 - 5/6 = -4/6 - 5/6 = -9/6 = -3/2

Now we can substitute both results in the fraction:

(11/8) / (-3/2)

When dividing fractions, we multiply by the reciprocal of the second fraction:

= (11/8) x (-2/3)

We can simplify further by cancelling out common factors:

= (-11/12)