2.75-[(-1/2)-(-5/6)+(-3/8)] +4又2/3=?

问题描述:

2.75-[(-1/2)-(-5/6)+(-3/8)] +4又2/3=?

2.75-[(-1/2)-(-5/6)+(-3/8)] +4又2/3
=4分之11-[(-1/2)+5/6 - 3/8)] +3分之14
=11/4-(-1/24)+14/3
=66/24+1/24+112/24
=179/242.75-[(-1/2)-(-5/6)+(-3/8)+4又2/3] =?2.75-[(-1/2)-(-5/6)+(-3/8)+4又2/3] =11/4-[(-1/2)+5/6 - 3/8+14/3]=11/4-[(-12/24)+20/24-9/24+112/24]=11/4-37/8=(-15/8)=(-1又8分之7)(-4)-(-2)-﹛(-5)-[(-7)+(-3)-(-8)]﹜=?|3-4|+(-5-8)-|-1+5|-(5-20)=?(-4)-(-2)-﹛(-5)-[(-7)+(-3)-(-8)]﹜=(-2)-[(-5)-(-2)]=(-2)-(-3)=1|3-4|+(-5-8)-|-1+5|-(5-20)=|(-1)|+(-13)-|+4|-(-15)=1-13-4+15=(-1)