Question

А) 31/80+(3/16+39/80)
Б) 2/45+(3/45+7/9)
В) (3/7+5/14)+1/14
Г) 7/15+(2/15+1/5)
Д) 3/16+(1/16+5/8)
Е) (1/13+1/14)+12/13

Answer 1

2/45+(3/45+7/9)=0,88
(3/7+5/14)+1/14=0,85
7/15+(2/15+1/5)=0,8
3/16+(1/16+5/8)=0,87
(1/13+1/14)+12/13=1,07