svp urgents je ne compren rien

Bonjour

a) -3.5/2.1 = - 35/21 = - 5/3

b) -5.6/14 = -56/140 = - 2/5

c) 9.6/-16.8 = 96 /- 168 = -4/7

d) 16.8/14.4 = 168/144 = 7/6

a). -3,5/2,1    =  -7/2/21/10    =  -70/42    =-5/3

b). -5,6/14  =-56/10/14  =-56/140  =-2/5

c). 9,6/-16,8  =  96/10/-168/10   =96/-168    =-4/7

d). 16,8/14,4  =  168/10/144/10  = 168/144=  7/6