11sur 6 - 2 sur 3 + 1sur 6 / 1sur2+3sur2x7sur4 / (20sur9-5sur3)x3sur10

Salut ! 

[tex] \frac{11}{6} - \frac{2}{3} + \frac{1}{6} \\ \\ \frac{11}{6} - \frac{2*2}{3*2} + \frac{1}{6} \\ \\ \frac{11}{6} - \frac{4}{6} + \frac{1}{6} \\ \\ \frac{7}{6}+ \frac{1}{6} \\ \\ \frac{8}{6}= \frac{4*2}{3*2}= \frac{4}{3} [/tex]


[tex] \frac{1}{2} + \frac{3}{2} * \frac{7}{4} \\ \\ \frac{1}{2} + \frac{3*7}{2*4} \\ \\ \frac{1}{2} + \frac{21}{8} \\ \\ \frac{1*4}{2*4}+ \frac{21}{8} \\ \\ \frac{4}{8} + \frac{21}{8} \\ \\ \frac{25}{8} [/tex]


[tex]( \frac{20}{9}- \frac{5}{3})* \frac{3}{10} \\ \\ ( \frac{20}{9} - \frac{5*3}{3*3} )* \frac{3}{10} \\ \\ ( \frac{20}{9} - \frac{15}{9} )* \frac{3}{10} \\ \\ \frac{5}{9} * \frac{3}{10} \\ \\ \frac{5*3}{3*3*2*5} = \frac{1}{6} [/tex]


J'espère t'avoir aidé(e) ! :)