负3又3分之2减负2又4分之3减负1又3分之2减正1.75=?

问题描述:

负3又3分之2减负2又4分之3减负1又3分之2减正1.75=?

原式=(-11/3)-(-11/4)-(-5/3)-7/4
=[(-11/3)-(-5/3)]-[(-11/4)+7/4]
=[-11/3+5/3]-[-11/4+7/4]
=-6/3-(-4/4)
=-2+1
=-1