Réponse :

bonjour

Explications étape par étape :

A 5/6+1/3=

=5/6 +2x1/2x3

=5/6 +2/6

=7/6

B.7/9-1/27=

=7x3/9x3  -1/27

=21/27 -1/27

=20/27

C.8/5+23/50

=8x10/5x10 +23/50

= 80/50 +23/50

=103/50

d.45/15-7/3

=3-7/3

=3x3/1x3 -7/3

=9/3 -7/3

=2/3

E.4/11+2

=4/11 +2x11/1x11

=4/11 +22/11

=26/11