\(\frac{3}{5}\times\frac{3}{7}\times\frac{2}{5}\times\frac{4}{7}\)
\(=\frac{9}{35}\times\frac{8}{35}=\frac{72}{1225}\)
C2 : \(\frac{3}{5}\times\frac{3}{7}\times\frac{2}{5}\times\frac{4}{7}=\frac{72}{1225}\)
k cho mik nha
Cách 1
\(\frac{2}{5}\times\frac{3}{7}\times\frac{2}{5}\times\frac{4}{7}\)
\(=\frac{6}{35}\times\frac{2}{5}\times\frac{4}{7}\)
\(=\frac{12}{175}\times\frac{4}{7}\)
\(=\frac{48}{1225}\)
Đúng 100%
Tk mk mk tk lại
Cảm ơn bạn nhiều
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Toán lớp 4 j mà khó vậy bn
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