1 1/2 + 3 2/10 = 3 2/3 – 1 1/4 =

Hmmmmmmmm…………………

1 1/2 +3 2/10=3/2-32/10=
15/10+32/10=
47/10=4 7/10=4,7

3 2/3-1 1/4=11/3-5/4=44/12-15/12=
29/12=2 5/12