ldcf.net
当前位置:首页 >> 7x9x(6/7一1/9)怎么简算? >>

7x9x(6/7一1/9)怎么简算?

对的

7*9*(5/6-1/9) =7*9*5/6-7*9*1/9 =105/2-7 =91/2

2/9-7/16x2/9 =2/9x(1-7/16) =2/9x9/16 =2/16 =1/8 9/2-16/7x9/2 =9/2x(1-16/7) =9/2x(-9/7) =-81/14 谢谢,请采纳

解: 7/25÷1/9X9 =7/25X9X9 =(7X9X9)/25 =567/25

5/7÷1/9十5/7-5/7x9 =5/7x9十5/7-5/7x9 =5/7x9-5/7x9十5/7 =5/7x(9-9)十5/7 =5/7

13/8x7/9十13/9X1/8 =13/9x7/8+13/9x1/8 =13/9x(7/8+1/8) =13/9x1 =13/9 ----------------------------------------------------------

=(1-6)X(1-15)X(1-27/2)X(1-63/5)X(1-4)X(1-27/7)X(1-15/4)X(1-11/3) =5X14X(1-27/2)X(1-63/5)X3X(1-27/7)X(1-15/4)X(1-11/3) =5X(1-63/5)X2X(1-27/2)X7X(1-27/7)X3X(1-11/3)X(1-15/4) =(-58)X(-25)X(...

518十196/7x9和518-196x7 9 运算顺序不一样。

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com