Question

va rooog ex 6 și 7 dau coroana

Answer 1

6. a) 2,35-1,4=0,95
b) 0,95:0,3=3,1(6)

7. {[6/9-5/10]*18-0,75}:3,6
pe 6/9 amplifici cu 10 
pe 5/10 amplifici cu 9

{[60/90-45/90]*18-0,75}:3,6
(15/90*18-0,75):3,6
(15/5-0,75):3,6
(3-0,75):3,6
2,25:3,6
0,625

Answer 2

6.
a) 2,35-1,4=0,95
b) 0,95:0,3=19/20÷3 = 19/20×1/3=19/60
7.

{[0,(6)-0,5]×18-0,75} :(5,05 :1,45)=
(6/9-5/10)×18-75/100]: 3,6=
(60-45/90×18-75/100):3,6 =
(15/90×18-75/100):3,6=
(3-75/100):3,6 =
300-75/100:36/10=
225/100::36/10=
225/100×10/36= 5/8