[tex]\it a)\ \dfrac{3x}{8}=\dfrac{9}{5}|_{\cdot{\frac{8}{3}}} \Rightarrow x= \dfrac{24}{5}\\ \\ \\ b)\ \dfrac{4x}{5}=\dfrac{7}{11}|_{\cdoty\frac{5}{4}} \Rightarrow x=\dfrac{35}{44}\\ \\ \\ c)\ \dfrac{x-4}{7}=\dfrac{13}{5}|_{\cdot7} \Rightarrow x-4=\dfrac{91}{5}|_{+4}\Rightarrow x=\dfrac{111}{5}\\ \\ \\ d)\ \dfrac{5}{3}=\dfrac{1,4^{(7}}{7x}\Rightarrow \dfrac{5}{3}=\dfrac{0,2}{x} \Rightarrow x=\dfrac{3\cdot0,2}{5}=\dfrac{^{5)}0,6}{5}=\dfrac{3}{25}[/tex]
[tex]\it e)\ \dfrac{9x}{10}=8,1|_{\cdot10} \Rightarrow 9x=81|_{:9} \Rightarrow x=9\\ \\ \\ f)\ \dfrac{x}{2}=\dfrac{32}{x} \Rightarrow x^2=64 \Rightarrow x=\pm8[/tex]
