Bonjour,
-4-(-5) = -4+5= 1
12/(3/4) = (12*4)/3 = 48/3 = 16
7/7 = 1
6/(2/3) = 6 *3/2 = 18/2 = 9
(2/3) /6 = 2/(3*6) = 2/18 = 1/9
9 , oui
3/4*3/4 = 9/16
0,3*0,3 = 0,9
-x
+0,5
-2*-2*-2 = -8
