Question

ma anutati va rog la ex 11 si 12 dau coroana​

Answer 1

Explicație pas cu pas:

11. 30/30=1

120/90=40/30=4/3

30/6=5/1=5

12. a=2/3+5/3

a=7/3

x=1/1-39/70

x=70/70-39/70

x=31/70

x×39=13×3

x×39=39

x=39:39

x=1