Răspuns :
9*7=63 kg cartofi
9-5=4 lazi
4*7=28 kg cartofi ramase
(9*7)-(5*7)=63-35=28 kg cartofi ramase
9-5=4 lazi
4*7=28 kg cartofi ramase
(9*7)-(5*7)=63-35=28 kg cartofi ramase
I
9 × 7 - 5 × 7 = 63 - 35 = 28 ( kg rămase )
II
9 × 7 = 63 kg
9 - 5 = 4
4 × 7 = 28 ( kg rămase )
9 × 7 - 5 × 7 = 63 - 35 = 28 ( kg rămase )
II
9 × 7 = 63 kg
9 - 5 = 4
4 × 7 = 28 ( kg rămase )