Sagot :

Vins

bonjour

A  = ( 16/4 - 3 /4 ) x ( 3/18 + 4 /18 )

   =  13/4 x 7/18

   = 91/72

B = 5 - 2 (10/15 + 3/15 )

  = 5 - 2  x 13/15

  = 5 -  26/15

  = 75/15 - 26/15

  = 49/15