7.6 (through page 211), due March 23

I can't tell if I don't understand this section because it's especially difficult or if it's just because I'm so exhausted from taking the test. I do know, however, that I don't like that we have now have left congruence classes. (though at least they both have the same properties) I feel like I'll definitely be getting these mixed up and especially mix the interpretations/definitions for each. So the only good thing that I see is kind of what I said before that at least they hold the same properties of reflectivity, symmetry, transitivity and disjoint/identical property. hoorah.