Question

va rog mult exercitiul 8 va rog dau coroana

Answer 1

Răspuns:

Explicație pas cu pas:

a) 0,6 ∙1 1/9- 7/8: (2-1/4)=6/10∙10/9-7/8:(8-9)/4=2/3-7/8  ∙ 4/(-1)=2/3+7/2=(4+21)/6=25/6

b) (3 8/9-1,5):(3 1/2+0,8)+ 2,(4)=(35/9-15/10):(7/2+8/10)+(24-2)/9=

=(35/9-3/2):(7/2+4/5)+22/9 =(70-27)/18∙10/(35+8) +22/9=43/18∙10/43 +22/9=5/9+22/9=27/9=3

c) (8/3+ 5,13:9):371/100=(8/3+ 513/100∙1/9):371/100= (8/3+ 57/100)∙100/371=    

=(800+171)/300∙100/371=971/300∙100/371=971/1113

d) (〖1,8〗^2-3 7/50):(53/10-〖2,2〗^2 )∙2,3=(324/100-157/50):(53/10-484/100)∙23/10= (324-316)/100:(530-484)/100∙23/10=8/100:46/100∙23/10=8/100∙100/46  ∙ 23/10=2/5