Répondre :
85/4+25/-5 = 85/4 - 5 = 85/4 - 20/4 = 65/4
- 14/27+-5/108 = - 56 / 108 - 5/108 = - 61 / 108
-9/-18 - 5/30+(- 9/6) = + 3/6 - 1/6 - 9/6 = - 7/6
- 14/27+-5/108 = - 56 / 108 - 5/108 = - 61 / 108
-9/-18 - 5/30+(- 9/6) = + 3/6 - 1/6 - 9/6 = - 7/6