答案:1/2-2-2/3=-13/6,通分化简:1/2-2-2/3=3/6-12/6-4/6=(3-12-4)/6=-13/6
1/2-2-2/3=多少?解:1/2-2-2/3=3/6-12/6-4/6=(3-12-4)/6=-13/6答:1/2-2-2/3=-13/6