vous pouvez m'aider svp❤​

Bonjour,

5/7 + (2/7 - 35/7)

=  5/7 - 33/7

= -28/7

= -4

(3/3 )/ 2/5

= 1/(2/5)

= 1*5/2

= 5/2

4/5 * ( 5/4 +4/4) -3/10

= 4/5 * 9/4  -3/10

= 36/20 -3/10

= 18/10 - 3/10

= 15/10

= 3/2