Vì số lớn gấp 2 lần số bé nên ta có :
Số bé + Số bé + Số bé = Số bé + Số lớn = 72
\(\Rightarrow\)3 . Số bé = 72
\(\Rightarrow\) Số bé = 72 : 3
\(\Rightarrow\) Số bé = 24
Vậy số bé là : 24
Tim 2 so, biet so lon gap 9 lan so be va so lon la so co ba chu so voi chu so hang tram la 4, dong thoi neu xoa di chu so hang tram cua so lon thi duoc so be
a) Cho 2 so co hieu la 105. Neu so lon chia so be thu duoc thuong la 7 du 3. Tim 2 so da cho.
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vay so lon la...........
