Bonjour!
1•)
(-2/3 + 2) - (5/2 - 1)
(4/3) - (5/2 + 1)
(4/3) - (-3/2)
4/2 + 3/2
8/6 + 9/6
(8+9)/6
17/6
Environ = 2,8333…
2•)
(-2/3 + 2) - (5/2 - 1)
(-2/3 + 6/3) - (5/2 - 1)
(-2+6/3) - (5/2 - 1)
4/3 - (5/2 - 2/2)
4/3 - (5-2/2)
4/3 - 3/2
8/6 - 9/6
8-9/6
-1/6
Environ = 0,1666…
