Vs pouvez pr ces deux calcul svp 1) (4 - 3/4) * (1/6+2/9) 2) 5 - 2 * (2/3+1/5)

Bonsoir , 
1/ - 
( 4 - 3/4) × ( 1/6 + 2/9 ) 
=  (16/4 - 3/4 ) × ( 9/54 + 12/54 ) 
= 13/4 × 21/54
= 273 / 216
2/ - 
5 - 2 × ( 2/3 + 1/5 ) 
= 5 - 2 × ( 10/15 + 3/15 ) 
= 5 - 2 × 13/15
= 5 - 26/15
= 75/15 - 26/15
= 49/15
voilà :)