aidez moi svp merci c pour demain !!!!!!!!​

Bonsoir,

a) 1/3=1*6/(3*6)=6/18

b) 2/3=2*2/(3*2)=4/6

c) 2/5=2*(-4)/(-4*5)=-8/-20

d) 3/2=3*3/(2*3)=9/6

1/3=1*2/(3*2)=2/6

e) 4/7=4*8/(7*8)=32/56

-3/8=-3*7/(8*7)=-21/56

f) 3=3*5/5=15/5

Réponse :

Explications étape par étape

Bonjour

1/3 et 1/18

1/3 = (1 x 6)/(3 x 6) = 6/18

7/6 et 2/3

2/3 = (2 x 2)/(2 x 3) = 4/6

-7/20 et 2/5

2/5 = (2 x 4)/(5 x 4) = 8/20

3/2 et 1/3

3/2 = (3 x 3)/(2 x 3) = 9/6

1/3 = (1 x 2)/(3 x 2) = 2/6

4/7 et -3/8

4/7 = (4 x 8)/(7 x 8) = 32/56

-3/8 = (-3 x 7)/(8 x 7) = -21/56

3 et -4/5

3 = (3 x 5)/(1 x 5) = 15/5