-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/07/06 12:43:12
-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)原式=-4.2

-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)
-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)

-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)
原式
=-4.2+0.2+(-7.5+0.4)-3.8
=0.6-7.5-8
=-7.4-7.5
=-14.9

-4.2-[(-0.2)-(-7.5+0.4)]+(-3.8)
=-4.2-[(-0.2)+7.5-0.4]+(-3.8)
=-4.2-[7.5-0.6]+(-3.8)
=-4.2-6.9-3.8
=-(4.2+3.8+6.9)
=-(8+6.9)
=-14.9

=-4.2+0.2-7.1-3.8
=-14.9