Arrange these numbers from least to greatest: - 5/6, - 4/9, - 3/5, - 4/7

First, change all the numbers to decimals to make it easier.

-5/6 = - 0.8333333 (3 repeats forever)

-4/9 = - 0.44444 (4 repeats forever)

-3/5 = - 0.6

-4/7 = - 0.5714285714

Then, arrange them from least to greatest:

-0.83, - 0.6, - 0.5714285714, - 0.4

Substitute in the actual fractions:

-5/6, - 3/5, - 4/7, - 4/9