Question

Tìm x , biết

1. \(\frac{x}{6}=\frac{8}{3}\)

2. \(\frac{125}{x}=\frac{25}{3}\)

3. \(\frac{0,1}{5}=\frac{2,1}{x}\)

4, \(\frac{x-2}{3}=\frac{4}{5}\)

Answer 1

\(\frac{x}{6}=\frac{8}{3}\Leftrightarrow x=\frac{6.8}{3}=16\)

\(\frac{125}{x}=\frac{25}{3}\Leftrightarrow x=\frac{125.3}{25}=15\)

\(\frac{0,1}{5}=\frac{2,1}{x}\Leftrightarrow x=\frac{5.2,1}{0,1}=105\)

\(\frac{x-2}{3}=\frac{4}{5}\Leftrightarrow x-2=\frac{12}{5};x=\frac{22}{5}\)