Question

(15*34)*23
29*(310*78)
1519*(1925*79)*57
(1013*1112)*(1255*1320)
помагите

Answer 1

1)(15*34)*23=3/20×2/3=6/60=1/10=0,1
2)29*(310*78)=2/9×21/80=42/720=21/360
3)1519*(1925*79)*57=15/19×133/225=7/15
4)(1013*1112)*(1255*1320)=110/156×156/1100=1/10=0,1