1)3 1/13×(2/9+1 4/5). . 2) (13 7/12-10 2/3): - вопрос №847986813113291452137121023212351320821535 от vladik28092006 11.05.2022 00:52

Question

Математика: 1)3 1/13×(2/9+1 4/5). . 2) (13 7/12-10 2/3): 2 1/2. 3)5 13/20: (8 2/15-3/5)

vladik28092006 · Answer

1)3 1/13×(2/9+1 4/5)=40/13×91/45=3640/585=56/9=6 2/92)(13 7/12-10 2/3)÷2 1/2=35/12÷5/2=7/6=1 1/63)5 13/20÷(8 2/15-3/5)=113/20÷113/15=1695/2260=3/4=0,75...