Answer: 3 13/20
Explanation:
so since you are adding the sides you need to find the common denominator
3/4 + 1 2/5 + 1 1/2
well the least common factor between them is over 20
15/20 (3*5 and 4*5) +
28/20 (1 2/5 = 7/5 so 7*4 and 5*4) +
30/20 (1 1/2= 3/2 3*10 and 2*10)=
15+28+30=73
73/20 and since it says mixed number
3 13/20 go into it and and 13 is prime so you can’t reduce it anymore