4.73-[2又3分之2-(-2.63)】-3分之1
问题描述:
4.73-[2又3分之2-(-2.63)】-3分之1
快,我明天要交的
答
zhuang19990201 ;
4.73-[2又2/3-(-2.63)]-1/3
=4.73-(2又2/3+2.63)-1/3
=4.73-2又2/3-2.63-1/3
=2.1-3
=-0.9