Б) 3/4×6/5+5/2×2/5-1÷7/6=1 33/35
1.3/4×6/5= 9/5 4. 9/5+1=1 9/5=2 4/5
2.5/2×2/5=1
3. 1×6/7=6/7
5. 2 4/5-6/7=2 28/35-30/35=1 63/35-30/35= 1 33/35
в)(2/15+7/12)×30/43-2÷5/2×5/32= 37/344
1. 2/15+7/12 общий знаменатель 60
8/60+12/60=20/60=1/3(разделили на 30)
2.1/3×30/43=10/43
3. 2×2/5=4/5
4. 4/5×5/32=сокращаем 4 и 32, 5 и 5получаем= 1/8
5. 10/43-1/8=80/344-43/344=37/344