5 3/8-2 5/8 помогите решить

5 3 /8 - 2 5 /8 = 3 + 3 /8 - 5 /8 = 3 + 3 - 5/ 8 = 3 - 2 /8 = 3·8 /8 - 2/ 8 = 22 8 = 11·2 4·2 = 11 /4 = 3 + 2·4 /4 = 2 3 /4

1)5/1*3/8=15/8 2)2/1*5/8=5/4 3)15/8-5/4=5/8