First make -1 5/6 into a rational fraction
So 6 x 1 + 5 all over 6
-11/6
Now take (-11/5) / (-11/6)
For fractions division is equal to multiplication of the reciprocal
So we have
(-11/5) x (-6/11)
Thus me have
(66/55)
Both 66 and 55 are divisible by 11 so we have 6/5
Now 5 goes into 6 1 time with remainder 1
Thus we have 1 and 1/5
1 1/5