Bài làm
\(\frac{0,16}{\left(\frac{x}{3,5}\right)}=2,8\)
\(16:\left(\frac{x}{3,5}\right)=2,8\)
\(\frac{16}{10}:\left(x:3,5\right)=\frac{28}{10}\)
\(\frac{16}{10}:\left(x:\frac{35}{10}\right)=\frac{28}{10}\)
\(\left(Xx\frac{10}{35}\right)=\frac{16}{10}:\frac{28}{10}\)
\(Xx\frac{10}{35}=\frac{16}{10}x\frac{10}{28}\)
\(Xx\frac{10}{35}=\frac{4}{7}\)
\(X=\frac{4}{7}:\frac{10}{35}\)
\(X=\frac{4}{7}x\frac{35}{10}\)
\(X=2\)
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