问题
解答题
156-78+22=156-(78+22).______.
答案
156-78+22,
=78+22,
=100;
156-(78+22).
=156-100,
=56;
100≠56;
故答案为:错误.
156-78+22=156-(78+22).______.
156-78+22,
=78+22,
=100;
156-(78+22).
=156-100,
=56;
100≠56;
故答案为:错误.