(-7/3)-(-7/4)+2/3+9/4的得数是多少
问题描述：
(-7/3)-(-7/4)+2/3+9/4的得数是多少
答
(-7/3)-(-7/4)+2/3+9/4
=-7/3+7/4+2/3+9/4
=(-7+2)/3+(7+9)/4
=-5/3+4
=-5/3+12/3
=(-5+12)/3
=7/3