Ответ:
Пошаговое объяснение:
1) 7 3/20-5 1/12=7 9/60-5 5/60=2 4/60=2 1/15
2 1/15*1,5=31/15*15/10=31/10=3 1/10=3,1
6 3/7*1,4=45/7*14/10=18/2=9
9:1,8=5
3,1:5=0,62
2) 5,7:0,3=19 19-8 1/3=18 3/3-8 1/3=10 2/3
10 2/3*0,75=32/3*75/100=32/3*3/4=8
2 1/8+1,75=2 1/8+1 3/4=2 1/8+1 6/8=3 7/8
3 7/8:15,5=3 7/8:15 1/2=31/8*2/31=1/4
8:1/4=8*4/1=32
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Ответ:
Пошаговое объяснение:
1) 7 3/20-5 1/12=7 9/60-5 5/60=2 4/60=2 1/15
2 1/15*1,5=31/15*15/10=31/10=3 1/10=3,1
6 3/7*1,4=45/7*14/10=18/2=9
9:1,8=5
3,1:5=0,62
2) 5,7:0,3=19 19-8 1/3=18 3/3-8 1/3=10 2/3
10 2/3*0,75=32/3*75/100=32/3*3/4=8
2 1/8+1,75=2 1/8+1 3/4=2 1/8+1 6/8=3 7/8
3 7/8:15,5=3 7/8:15 1/2=31/8*2/31=1/4
8:1/4=8*4/1=32