[-100]*[3/10-1/2+1/5-0.1]

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/23 15:50:37
[-100]*[3/10-1/2+1/5-0.1][-100]*[3/10-1/2+1/5-0.1][-100]*[3/10-1/2+1/5-0.1](-100)*(0.3-0.5+0.2-0.1)=

[-100]*[3/10-1/2+1/5-0.1]
[-100]*[3/10-1/2+1/5-0.1]

[-100]*[3/10-1/2+1/5-0.1]
(-100)*(0.3-0.5+0.2-0.1)
=(-100)*(-0.1)
=10

把-100乘进去,乘以每个项的结果是:-30+50-20+10=-10