Réponse :

bonjour

simplifier les fractions

35/77

=5×7/7×11

on enlève ce qui est commun reste 5/11

-142/-72

=142/72

=2×71/2×2×2×3×3

=71/2×2×3×3

=71/36

57/-12

=3×19/-2×-2×-3

=19/-4

1629/-927

=3×3×181/-3×-3×103

=181/-103

transformer enfractions les quotients

-12.8/40.53=-1280/4053

-4/-7.5=8/15