Réponses

Meilleure réponse !
2014-09-18T18:20:55+02:00
A = - 12/15 x - 35/30
a = -420/450
a = 30 x 14 / 30 x 15
a = 14/15

b = 45/28 x 7/15
b = 315/420
b = 105 x 3 / 105 x 4
b = 3/4

c = - 6/-8 x - 10/-9 x 56/-3
c = 60/72 x - 56/3
c = - 3360/216
c = 24 x - 140 / 24 x 9
c  = - 140/9

d = 18/7 : 27/14
d = 18/7 x 14/27
d = 252/189
d = 63 x 4 / 63 x 3
d = 4/3

e = - 12/5 : 9/10
e = - 12/5 x 10/9
e = - 120/45
e = 15 x - 8 / 15 x 3
e = - 8/3