bonjour vous pouvez m'aider svp merci. ​

Bonjour,

12/14 -9/14

= 3/14

3/4 +35/12 +1/3

=  9/12 +35/12 + 4/12

= 48/12 = 4

( 15/25 -3/25) * 5/4+1

= 12/25 *5/4 +1

=  60/100 -1

=60/100- 100/10

= -40/100 = -4/10 = -2/5

(6/4 -1/4 ) *2/15

= 5/4*2/15

= 8/ /60 = 4/30 = 2/15