Question

помогите с дз по матем​

Answer 1

2)=(11-5-3)+(7/10-7/30-4/15)=3+(21/30-7/30-8/30=3+6/30=3 1/5

3)=(9-2-4)+(14/15-1/5-7/10)=3+(28/30-6/30-21/30)=3+1/30=3 1/30

5)=561/20-(7-38/15)=561/20-67/15=1683/60-268/60=1415/60=283/12=23 7/12

6)=728/25-(4-11/5)=728/25-9/5=728/25-45/25=683/25=27 8/25