Répondre :
Bonjour,
A=
-5/3 - 140/ 588
= -5/3 -20/84
=-5/3 - 5/21
= -35/21 - 5/21
= -40/21
B=
7/8 -3
= 7/8 - 24/8
= -17/8
-17/8 * -2/51
= 34/ 408
= 17/204
Bonjour,
A=
-5/3 - 140/ 588
= -5/3 -20/84
=-5/3 - 5/21
= -35/21 - 5/21
= -40/21
B=
7/8 -3
= 7/8 - 24/8
= -17/8
-17/8 * -2/51
= 34/ 408
= 17/204