[tex]5x= \frac{5}{3} aducand la acelasi numitor abtinem =\ \textgreater \ 15x=5 =\ \textgreater \ x= \frac{15}{5} =3[/tex]
[tex] \frac{1}{2x} =3 =\ \textgreater \ 1=6x =\ \textgreater \ x= \frac{1}{6} [/tex]
[tex] \frac{7x}{8} = \frac{21}{16} =\ \textgreater \ 14x=21 =\ \textgreater \ x= \frac{21}{14} = \frac{3}{2} [/tex]