(5- 3/8):(3 1/4-1/8):(2 1/3+1 2/5+5/6) =222/685.
1)) 5- 3/8= 4 8/8- 3/8= 4 5/8=
(4•8+5)/8= 37/8
2)) 3 1/4- 1/8= 3 (1•2)/(4•2)- 1/8=
3 2/8- 1/8= 3 1/8 =(3•8+1)/8=25/8
3)) 2 1/3+ 1 2/5+ 5/6= 2 (1•10)/(3•10)+
1 (2•6)/(5•6)+ (5•5)/(6•5)=
2 10/30+ 1 12/30+ 25/30=
3 47/30= 4 17/30=
(4•30+17)/30=137/30
4)) 37/8 : 25/8 : 137/30=
37/8• 8/25• 30/137=
Сокращаем 8 и 8 на 8; 25 и 30 на 5;
37/1• 1/5• 6/137= (37•6)/(5•137)=
222/685.