有理数加法运算(-1/2)+31/4+2.75+(-61/2)怎么解?

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/30 09:58:53

有理数加法运算(-1/2)+31/4+2.75+(-61/2)怎么解?

(-1/2)+31/4+2.75+(-61/2)
=-2/4+31/4+11/4-122/4
=(-2+31+11-122)/4
=-82/4
=-41/2