Answer:
-49/12
Explanation:
change the numbers into mixed numbers.
-2⅓ turns into -7/3, -1¾ turns into -7/4
then, find a common denominator. In this case, 12 is the least common denominator. Put both fractions into 12ths
-7/3 turns into -28/2 and -7/4 turns into -21/12
then you subtract the numerators to get -49/12