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
=30/8-[ -3/8 -4/8 +5/6 + 11/3]-1/8
=30/8+3/8+4/8-1/8-(5/6 + 11/3)
=36/8-27/6
=9/2-9/2
=0

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