>
数学
>
−4
3
4
+7.4+4.75+2
3
5
.
人气:283 ℃ 时间:2020-04-17 21:19:56
解答
原式=-4
3
4
+4
3
4
+7
2
5
+2
3
5
=0+10
=10.
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5分之23-(-4-3分之2)-2.75+(-7-3分之2)
(-3.75)+5又3分之1+(-2又7分之1)+(-4又3分之1)+3又4分之3+(-1又7分之6)
5又4分之3-7又2分之1-0.75+0.5
﹣0.5-3又4分之1+(﹣2.75)+7又2分之1
﹙﹣0.5﹚-[﹣3又4分之1]+2.75-[7又2分之1]
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