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3/4减3/10减1/4加7/10等于多少

3/4-3/10-1/4+7/10 =(3/4-1/4)+(7/10-3/10) =1/2+2/5 =9/10 你好,本题已解答,如果满意 请点右下角“采纳答案”。

7/10减去1/4加上3/10减去3/4 =(7/10+3/10)-(1/4+3/4) =1-1 =0 行家正解,不明白可以追问!祝您学习进步 满意请点击下面的【选为满意回答】按钮,O(∩_∩)O谢谢

4+3/7+2.8-3/7 =31/7+14/5-3/7 =28/7+14/5 =4+14/5 =4+2+4/5 =6+4/5 1÷1/10-1/10÷1 =1×10-1/10 =9+9/10

解:根据题意列式为: 3+1/4+4+7/10-(2+1/4)-(1+3/10) =3+4-2-1+(1/4-1/4+7/10-3/10) =7-3+(0+4/10) =4+2/5 =4又2/5

9/8×[3/4-(7/10-1/4)] =9/8×[3/4-7/10+1/4] =9/8×[3/4+1/4-7/10] =9/8×3/10 =27/80

7/10x3/7-1/4+7/10 =3/10-1/4+7/10 =(3/10+7/10)-1/4 =1-1/4 =3/4

(4/5+1/4)/7/3+7/10 =(16/20+5/20)/7/3+7/10 =21/20*3/7+7/10 =9/20+7/10 =9/20+14/20 =23/20

原式=(16/20+5/20)*3/7+7/10=21/20*3/7+7/10=9/20+14/20=23/20

11/20 5/4 5/14 13/12

(4/5+1/4)÷7/3+7/10 =(16/20+5/20)÷7/3+7/10 =21/20÷7/3+7/10 =49/20+14/20 =63/20

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