Ответ:
Пошаговое объяснение:
а) 2/15+1 7/12=8/60+1 35/60=1 43/60
1 43/60*30/103=103/60*30/103=1/2
2/1*4/9*9/32=1/4
1/2-1/4+2 1/3=6/12-3/12+2 4/12=2 7/12
б) 7 1/2*2 2/3=15/2*8/3=20
12 1/4:7/9=49/4*9/7=63/4=15 3/4
20-15 3/4=19 4/4-15 3/4=4 1/4
4 1/4:6=17/4*1/6=17/24
17/24+3 1/8=17/24+3 3/24=3 20/24=3 5/6
3 5/6+5 2/7=3 35/42+5 12/42=8 47/42=9 5/42
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Answers & Comments
Ответ:
Пошаговое объяснение:
а) 2/15+1 7/12=8/60+1 35/60=1 43/60
1 43/60*30/103=103/60*30/103=1/2
2/1*4/9*9/32=1/4
1/2-1/4+2 1/3=6/12-3/12+2 4/12=2 7/12
б) 7 1/2*2 2/3=15/2*8/3=20
12 1/4:7/9=49/4*9/7=63/4=15 3/4
20-15 3/4=19 4/4-15 3/4=4 1/4
4 1/4:6=17/4*1/6=17/24
17/24+3 1/8=17/24+3 3/24=3 20/24=3 5/6
3 5/6+5 2/7=3 35/42+5 12/42=8 47/42=9 5/42