a) 6,75kg + 6,75kg + 6,75kg = 6,75kg x 3 = 20,25kg
6,75kg + 6,75kg + 6,75kg = ( 6,75 x 3 ) kg = 20,25kg
6,75 kg + 6,75 + 6,75 = 20,25 kg
6,75 kg + 6,75 kg + 6,75 kg = ( 6,75 kg x 3 ) = 20,25 kg
Đúng nha yen nhi
6,75 kg + 6,75 kg + 6,75 kg = 6,75 kg x 3
= 20,25 kg
Nha bạn yen nhi