Answer: 3 7/
Step-by-step explanation: Change 3 2/3 and 1 4/5 from mixed fraction to improper fraction, giving 11/2 (3×3=9, then 9+2=11) and 9/5 (1×5=5, then 5+4=9)1.
With 11/2 and 9/5, the LCM(Lowest Common Multiple) is 10. So 10÷2=5, then 5×11=55. Likewise, 10÷5=2, then 2×9=18.
55-18=37. Therefore the answer is 37/10. Change that back to mixed fraction and it gives you 3 7/10