Bonjour
Simplifier et détailler :
7/3-5/3(3-5/2)
= 7/3 - 5/3 [(3 x 2) / (1 x 2) - 5/2]
= 7/3 - 5/3 (6/2 - 5/2)
= 7/3 - 5/3 x 1/2
= 7/3 - 5/6
= (7 x 2) / (3 x 2) - 5/6
= 14/6 - 5/6
= 9/6
= (3 x 3) / (3 x 2)
= 3/2
5/3:(5/3+5/7)
= 5/3 : [(5 x 7) / (3 x 7) + (5 x 3) / (7 x 3)]
= 5/3 : (35/21 + 15/21)
= 5/3 : 50/21
= 5/3 x 21/50
= 105/150
= (15 x 7) / (15 x 10)
= 7/10.
