Question

daca marim dublul unui numar cu 3 pe 2 obtinem 2 pe 5 aflti numarul

Answer 1

x-numarul
$2x+ \frac{3}{2} = \frac{2}{5}=\ \textgreater \ 2x= \frac{2}{5} - \frac{3}{2} =\ \textgreater \ 2x= \frac{4}{10}- \frac{15}{10} =\ \textgreater \ \\ 2x= \frac{-11}{10} =\ \textgreater \ x= \frac{-1,1}{2}$