Sagot :
Bonjour,
A= 3/2 - 1/3 / 3/4 + 2/3
(1/3)/(3/4) = 1/3 * 4/3
=3/2 - 1/3 * 4/3 +2/3
= 3/2 - 4/9 +2/3
= 27/18 - 8/18+12/18
= 31/18
B=7/5+8/15/2/3-19/2
8/15/2/3 = 8/15 * 3/2 = 24/30 = 12/15 = 4/5
= 7/5 +4/5 -19/2
= 11/5 -19/2
= 22/10 - 95/10
= -73/10
