(-32)-[(-27)-(72)]-87怎么做

来源：学生作业学帮网编辑：学帮网时间：2024/05/28 09:49:06

(-32)-[(-27)-(72)]-87
=-32-(-27)+72-87
=-32+27+72-87
=-5+72-87
=67-87
=-20

(-32)-[-99]-87
(-32)+99-87
剩下自己算

qianmianzijisuan
(119)+99=-20