a) [latex] frac{1}{2}* ( frac{1}{3}+ frac{1}{6})= frac{1}{2}*( frac{2}{6}+ frac{1}{6})= frac{1}{2}* frac{3}{6} = frac{1}{6} [/latex] c) [latex]= frac{1}{6} + frac{3}{2}*( frac{3}{4}- frac{2}{4})= frac{1}{6}+ frac{3}{2}* frac{1}{4} = frac{1}{6}+ frac{3}{6}= frac{4}{6} [/latex] e)raspunsul e 37 b)raspunsul e [latex] frac{7}{2} [/latex]