Réponse :
bonjour
3/11 x 3/4 - 7 /44
= 12/44 x 33/44 - 7 /44
= 396/1 936 - 7 /44
= 396 / 1 936 - 308/1 936
= 88/ 1936 = 1 /22
5% = 5 /100 = 1 /20
1/3 x ( 1 - 2 /3 )
= 1/3 x ( 3/3 - 2 /3)
= 1 /3 x 1 /3
= 1 /9
4/3 x 1 /20 = 4/60 = 1 /15
13/18 - 1/3 x 2
= 13/18 - 2/3
= 13/18 - 12/18
= 1 /18
17/75 + 2/3 x 4 /25 - 2 /15
= 17/75 + 8/75 - 10/75
= 15/75
= 1 /5
voilà tu cherches maintenant le mot
Explications étape par étape
