Solve the following equation:
$\frac{x}{6}=\frac{5}{3}$x6=53
Solve $\frac{7}{9}=\frac{4}{x}$79=4x.
Solve $\frac{x}{6}=2\frac{2}{3}$x6=223.
Solve $\frac{7.8}{7.5}=\frac{x}{5}$7.87.5=x5.
Solve linear equations in one variable.