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7/8+3/7%1/8%3/4等于几分之几

7/8+3/4+1/12 =21/24+18/24+2/24 =41/24

3/7-括号1/7+1/4等于几分之几 =3/7-1/7-1/4 =2/7-1/4 =8/28-7/28 =1/28

8分之49加8分之3 等于8分52 等于6.5

7/8-9/4+1/8 =(7/8+1/8)-9/4 =1-9/4 =-5/4

4/7÷(4/3)×5/8+3/7×3/8 =4/7×3/4×5/8+3/7×3/8 =3/7×5/8+3/7×3/8 =3/7×(5/8+3/8) =3/7×1 =3/7

如果你要表示的题目是:四分之一加八分之三加七分之二,应该这么解: 1/4+3/8+2/7=2/8+3/8+2/7=5/8+2/7=35/56+16/56=51/56; 要是你表示的题目是:四加上三分之八加二分之七,就这么解: 4+8/3+7/2=24/6+16/6+21/6=61/6,等于六分之61,也就是10...

8分之5乘7分之3乘3分之14 =15/56x14/3 =5/4 =1又1/4

3/4-7/10 =15/20-14/20 =1/20

答案是:28分之3 分母乘以分母,分子乘以分子即可 4X7=20 1X3=3 希望能帮到你,望采纳!

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