а) 1/2 + 1/4 = 2/4+1/4 = 3/4
1/3 + 5/7 = 7/21 + 15/21 = 22/21 = 1½
1/4+5/6 = 3/12+10/12 = 13/12= 1½
б) 5/8+5/24 = 15/24 + 5/24= 20/24
4/5+1/6= 24/30 + 6/30 = 1
3/20+ 7/25 = 15/100 + 28/100 = 42/100
в) 1/2-1/8 = 3/8
1/2-1/3= 1/6
5/6-3/8 = 20/24 +9/24 = 29/24 = 1 5/24
г) 3/4-1/13=9/12-1/12= 8/12
5/7-2/3=15/21-14/21=1/21
9/10-3/4=36/40-30/40=6/40
а) 3/4 17/14 26/24= 13/12
б) 20/24= 5/6 29/30 43/100= 0,43
в) 3/8 1/6 32/48=8/12=4/6=2/3
г)8/12=4/6=2/3 1/21 2/40=1/20
Пошаговое объяснение:
а) 1/2 + 1/4 = 2/4+1/4 = 3/4
1/3 + 5/7 = 7/21 + 15/21 = 22/21 = 1½
1/4+5/6 = 3/12+10/12 = 13/12= 1½
б) 5/8+5/24 = 15/24 + 5/24= 20/24
4/5+1/6= 24/30 + 6/30 = 1
3/20+ 7/25 = 15/100 + 28/100 = 42/100
в) 1/2-1/8 = 3/8
1/2-1/3= 1/6
5/6-3/8 = 20/24 +9/24 = 29/24 = 1 5/24
г) 3/4-1/13=9/12-1/12= 8/12
5/7-2/3=15/21-14/21=1/21
9/10-3/4=36/40-30/40=6/40
а) 3/4 17/14 26/24= 13/12
б) 20/24= 5/6 29/30 43/100= 0,43
в) 3/8 1/6 32/48=8/12=4/6=2/3
г)8/12=4/6=2/3 1/21 2/40=1/20
Пошаговое объяснение: