Répondre :
Bonjour,
1)
a. - 6/11 = 6/- 11
b. - 5/7 = 5/7
c. 1/- 6 = - 1/6
2)
a. 3/4 = 75/100
b. 5/3 = 40/24
c. 63/49 = 7/7
3)
a. 2/5 = (2 x 6) / (5 x 6) = 12/30
b. 0,4/- 7 = (0,4 x (- 10) / (- 7 x - 10) = - 4/70
c. 60/28 = (60 : 4) / (28 : 4) = 15/7
d. 45/81 = (45 : 9) / (81 : 9) = 5/9.
Bonjour,
1) a. -6/11=6/(-11)
c. 1/(-6)=(-1)/6
3) a. 2/5=2*6/(5*6)=12/30
b. 0,4/(-7)=0,4*(-10)/[-7*(-10)]=-4/70
c. 60/28=60:4/(28:4)=15/7
d. 45/81=45:9/(81:9)=5/9
P.S.: le reste est bon