1) 14/24 - 15/40 = 7/12 - 3/8 =
ОЗ:
12/2
6/2
3/3
8/2
4/2
2/2
12*2=24
24/12=2
24/8=3
7*2/24 - 3*3/24 = (14-9)/24 = 5/24
2) 12/18 - 5/60 = 2/3 - 5/60
ОЗ: 60
2*20/60 - 5/60 = 40-5/60 = 35/60 = 7/12
3) 4/24 + 3/36 = 1/6 + 1/12
ОЗ 12
1*2/12 + 1/12 = 3/12 = 1/4 = 0,25
1) 14/24 - 15/40 = 7/12 - 3/8 =
ОЗ:
12/2
6/2
3/3
8/2
4/2
2/2
12*2=24
24/12=2
24/8=3
7*2/24 - 3*3/24 = (14-9)/24 = 5/24
2) 12/18 - 5/60 = 2/3 - 5/60
ОЗ: 60
2*20/60 - 5/60 = 40-5/60 = 35/60 = 7/12
3) 4/24 + 3/36 = 1/6 + 1/12
ОЗ 12
1*2/12 + 1/12 = 3/12 = 1/4 = 0,25