Question

вычислите 1) (1 3/11+ 2 1/11) +36/11 2) 5 16/21-(2 7/21 +2 10/21

Answer 1

1).
((1+2)+(3/11+1/11))+36/14=(3-4/11)+36/14=3 4/11 + 36/14 = 37/11+36/14= 457/77 =5 72/77.

2).
212/21 -(2+2)+(7/21+10/21))=121/21-(4+17/21)=121/21-4 17/21=212/21-101/21=20/21.