3.75-[(-3/8)+(-1/2)-(-5/6)+4又3/2]-0.125

问题描述:

3.75-[(-3/8)+(-1/2)-(-5/6)+4又3/2]-0.125

3.75-[(-3/8)+(-1/2)-(-5/6)+4又3/2]-0.125
=3.75-(-0.375-0.5+5/6+5.5)-0.125
=3.75+0.375+0.5-5/6-5.5-0.125
=-5/6-1
=-1又5/6