1.
3/2+ (-3) * 1/6
= 3/2 + (-3/6)
= met au même dénominateur = 9/6 + (-3/6)
= 1
2.
(3/2 - 1/6) / (-3)
= met au même dénominateur = ( 9/6 - 1/6) / (-3)
= 8/6 / (-3)
= 8/6 * 1/(-3)
=8/-18
=-4/9
3.
3/2 * (-3) / 1/6
= -9/2 / 1/6
= -9/2 * 6/1
= -54/2 = -27