1  how many are they in garde?

2  how many they have children?

3  how many is brother in class?

4  how many is girl in he class?

ok

-chung ta phai song co le do vi no the hen len chung ta la mot nguoi co van hoa , dao duc

-em da lam nhung viec duoi day de the hien minh la nguoi co le do

+di hoi , ve chao

+luon chao nguoi lon tuoi hon minh ,khi gap

+noi nang nhe nhang

dien tich be mat trai dat la 510,2 trieu km

o gi khong hieu thi hoi minh minh phan tich cho nhe

\(x-\frac{2}{5}+\frac{7}{12}=\frac{1}{2}.\frac{3}{4}.\frac{-9}{16}\Rightarrow x-\frac{2}{5}+\frac{7}{12}=-\frac{27}{128}\)

\(\Rightarrow x=-\frac{27}{128}-\frac{7}{12}+\frac{2}{5}\Rightarrow x=-\frac{757}{1920}\)

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thuoc thang GHĐ 1m va ĐCNN la 1mm