Bonjour
calculer -15/16×12/35
= -15/16 x 12/35
= 12/16 x -15/35
= (3 x 4)/(4 x 4) x (-5 x 3)/(5 x 7)
= 3/4 x (-5/7)
= (-5 x 3)/(7 x 4)
= -15/28
