(1)-0.5+(-2/3)-|-4/5|-(-1/2)-(+1/3)
(2)(-4又1/2)-{3又2/5-[-0.13(-0.33)]}
(1)-0.5+(-2/3)-|-4/5|-(-1/2)-(+1/3)
(2)(-4又1/2)-{3又2/5-[-0.13(-0.33)]}
①原式=-1/2-2/3-4/5+1/2-1/3
=-4/5-1
=-9/5
②题目有没有错啊?
没错的话:原式=-4.5-{3.4-(-0.13-0.33)}
=-4.5-(3.4+0.46)
=-4.5-3.86
=-8.36