题目内容
．
103＋97,103－97,1200
计算：_______________．
计算：___________．
计算：(2x＋3)(y－1)－(x＋1)(2y－3)=___________．
=_________．
计算：__________．
________．
．
．
_______________．
___________．
．
=_________．
__________．
．
________．