195 :45 -60 :45 =(195-60):45 = 135 :60 =3
40:24+8:24=(40+8):24=48:24 =2
705 :45 -336 :45 = (705-336):45 = 369 :45 = 41/5
195 : 45 - 60 : 45
= (195-60):45
=135:45
=3
40 : 24 + 8 : 24
= (40+8) : 24
= 48:24
=2
705 : 45 - 336 : 45
=(705-336):45
=369:45
=8,2