4.32-(1.26+2.34) ＝4.32－3.6＝0.724.58-(1.42+2.58) ＝4.58-1.42-2.58＝4.58-2.58-1.42＝2-1.42＝0.583.6-1.28+3＝2.32+3＝5.32
都不能简算啊，孩纸
