How does cheese spoil?

Cheese: It smells like sour milk.

If you spot mold on hard cheese, it's generally safe to cut off the moldy part and eat the rest, since the spores likely will not have spread throughout the cheese. Another sign that cheese has gone bad is a smell or taste of spoiled, sour milk.

a is the correct

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8