Question

imi pare rau pt taieturi dar repede ajutor!​

Answer 1

Explicație pas cu pas:

(1+2)/2=(5+10)/10 adica 3/2=15/10

1/(1+2)=5/(5+10) adica 1/3=5/15

(5-1)/2=(10-2)/4 adica 4/2=8/4