− 8/5 − (− 3/4)

Explained

To subtract a negative number, we can change it to addition and reverse the sign. So,

-8/5 - (-3/4) = -8/5 + 3/4

To add fractions, we need to have a common denominator. The least common multiple of 5 and 4 is 20. So we need to find equivalent fractions with denominator 20.

-8/5 = -32/20
3/4 = 15/20

Now we can add:

-32/20 + 15/20 = -17/20

Therefore,

-8/5 - (-3/4) = -17/20