7
А)1/3-1/5= 5/15-3/15= 2/15
Б)3/5-1/7= 21/35-5/35= 16/35
В)8/15-1/2= 16/30-15/30 = 1/30
Г)4/7-3/10= 40/70-21/70= 19/70
8
А)1/3-1/6= 2/6-1/6=1/6
Б)9/14-2/7= 9/14-4/14=5/14
В)19/100-1/10=19/100-10/100=9/100=0,09
Г)3/5-11/25=15/25-11/25=4/25
9
А)5/6-3/8=20/24-9/24=11/24
Б)9/14-9/21=27/42-18/42=9/42=3/14
В)7/20-7/30=21/60-14/60=7/60
Г)5/12-2/9= 15/36-8/36=7/36
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Answers & Comments
7
А)1/3-1/5= 5/15-3/15= 2/15
Б)3/5-1/7= 21/35-5/35= 16/35
В)8/15-1/2= 16/30-15/30 = 1/30
Г)4/7-3/10= 40/70-21/70= 19/70
8
А)1/3-1/6= 2/6-1/6=1/6
Б)9/14-2/7= 9/14-4/14=5/14
В)19/100-1/10=19/100-10/100=9/100=0,09
Г)3/5-11/25=15/25-11/25=4/25
9
А)5/6-3/8=20/24-9/24=11/24
Б)9/14-9/21=27/42-18/42=9/42=3/14
В)7/20-7/30=21/60-14/60=7/60
Г)5/12-2/9= 15/36-8/36=7/36