Question

toate cele 3 ex sau macar cat stiti​

Answer 1

Răspuns:

Explicație pas cu pas:

20.

x : 9/8 = 3/4

x = 9/8 * 3/4 = 27/32

________________

21.

2 intregi si 3/10 = 23/10

23/14 : x = 23/10

x = 23/14 : 23/10 = 23/14 * 10/23 = 10/14 = 5/7

_________________

22.

L = 10 si 2/3 = 32/3 cm

l = 3 si 1/5 = 16/5 cm

l : L = 16/5 : 32/3 = 16/5 * 3/32 = 3/10

Answer 2

Răspuns:

a:8/9=3/4

a=3/4·9/8

a=27/32

_________

23/14:a=2intregi 3/10

2 intregi 3/10=(2·10+3)/10

23/14:a=23/10

a=23/14·10/23

a=10/14

a=5/7

______________

L=10 intregi 2/3=32/3 cm

l=3 intregi 1/5=16/5 cm

l:L=16/5:32/3=16/5·3/32=3/10