Răspuns :
30+20=50
50-30=20 fals
20+20=40
30+30=60
60-30=30 adevarat
30+20=50
Am rezolvat prin incercari .
50-30=20 fals
20+20=40
30+30=60
60-30=30 adevarat
30+20=50
Am rezolvat prin incercari .