Question

exercițiu 2 va rogg Dau coroana! urgentttt va roggg! a b c d e va rog ajutați-mă

Answer 1

Răspuns

a)  1/2

b) 7/10

c) 75;

d) 1/6;

e) 8

Explicație pas cu pas:

a) 3/7 : 4/3 :9/14;

3/7 .3/4 = 9/28;

9/28 . 14/9 = 1/2;

b) 2/5 : 3/7 : 4/3;

2/5 . 7/3 .3/4 = 7/10;

c) 5: (3/10 : 9/2) = 5: (3/10 .2/9) = 5 : 6/90 = 5.90/6 = 5.15 =75;

d) (2/3 : 6) : (1/5 : 3/10) = (2/3 . 1/6) : (1/5  . 10/3) = 2/18: 10/15 = 2/18 . 15/10 = 1/6;

e) 4: (1/2:1/8) : (2/5 :4/5)= 4: (1/2 . 8/1) : (2/5 . 5/4) = 4: 1/2 4.2 = 8.