calculer la fracion J =  8/5 x 3/4 - 2 x 3/10

Salut!

J=[tex] \frac{8}{5} * \frac{3}{4} -2* \frac{3}{10} = \frac{8*3}{5*4} -2* \frac{3}{10} = \frac{24}{20} - \frac{3}{5} = \frac{6}{5} - \frac{3}{5} = \frac{3}{5} [/tex]

Voilà