Bonjour aidez moi silvouplais :) 2/3 + 1/6 : 2/1 - 1/2 = 3/4 + 1/2 x ( 2/3 - 1/1 ) =

2/3 + 1/6 : 2/1 - 1/2
= 2/3 + 1/6 x 1/2 - 1/2
= 2/3 + 1/12 - 1/2
= 4/12 + 1/12 - 6/12
= - 1/12

3/4 + 1/2 x (2/3 - 1/1)
= 3/4 + 1/2 x (2/3 - 3/3)
= 3/4 + 1/2 x (- 1/3)
= 3/4 - 1/6
= 18/24 - 4/24
= 14/24
= 7/12