解
|-2|×(-2)
=2×(-2)
=-4
|-1/2|×5.2
=1/2×(26/5)
=13/5
|-1/2|-1/2-3-|-5.3|
=1/2-1/2-3--5.3
=-3-5.3
=-8.3|-2/1|-2/1 -3-|-5.3|是分开的吗|-1/2|-1/2=1/2-1/2=0——-3-|-5.3|=-3-5.3=-8.3嗯那就是上面那个了哦，谢谢