Calculer sous forme de fraction irréductible:
(2/3 + 5/7) x 3/4 - 3/4


Sagot :

Réponse:

(2/3 + 5/7) ×3/4-3/4

=( 14/21+15/21)×3/4-3/4

=29/21×3/4-3/4

=87/84-3/4

=29/28-3/4

=29/28-21/28

=8/28

=4/14

=2/7