计算 (1)(-1又6/7)+(-1又1/7) (2)(-1又5/12)+(+1/4) (3)(+3.2)+(-4.5) (4)(+4又1/3)+(5又1/2)求学神速速回答今日若无标准答案过今回收问题并不做采纳

问题描述:

计算 (1)(-1又6/7)+(-1又1/7) (2)(-1又5/12)+(+1/4) (3)(+3.2)+(-4.5) (4)(+4又1/3)+(5又1/2)
求学神速速回答
今日若无标准答案
过今回收问题并不做采纳