Răspuns :
Răspuns:
Explicație pas cu pas:
9/30-2/30=7/30
11/30-2/30=9/30
15/30-2/30=13/30
17/30 -2/30=15/30=1/2
19/30-2/30=17/30
Răspuns:
Explicație pas cu pas:
9/30-2/30=7/30
11/30-2/30=9/30
15/30-2/30=13/30
17/30 -2/30=15/30=1/2
19/30-2/30=17/30