3]
1)1,0625- 5/12 = 17/16- 5/12=51-20/48=31/48
2) 2,88*35/72= 72/25 * 35/72 = 7/5
3)31/48 *16= 31/3
4) 31/3 + 7/5 = 21+155/15= 176/15= 11 11/15
4]
1) (1 11/24+13/36) = 3+26/72= 29/72
2)29/72*36/25=29/2 * 1/25 = 29/50
3) 8/15* 9/16= 1/5*3/2=3/10
4)29/50-3/10= 29-15/50= 14/50=7/25=0,28