ldcf.net
当前位置:首页 >> 2/5×括号1/5+8/21÷(4/7)括号脱式计算 >>

2/5×括号1/5+8/21÷(4/7)括号脱式计算

2/5×[1/5+8/21÷(4/7)] =2/5x(1/5+2/3) =2/5x(13/15) =26/75

see

=7/32+7/10=35/160+112/160=147/160

24×(1/4+5/6-7/8) =6+20-21 =5

(1+3+5+7+…+2003)-(2+4+6++8+…+2002) =1+(3-2)+(5-4)+.....+(2003-2002) =1+1x1001 =1002

①2-[1/5+(2/5-5/7)] =2-1/5-2/5+5/7 =7/5+5/7 =49/35+25/35 =74/35; ②(2.5-2.5*0.4)÷4速度啊!! =2.5×(1-0.4)÷4 =2.5×0.15 =0.375 如果本题有什么不明白可以追问,如果满意记得采纳 如果有其他问题请采纳本题后另发点击向我求助,答题不易,...

1. 1/8*14/8/7 =7/4/8/7 =7/4*7/8 =49/*32 2. 9/14/(6/5-3/4)*7/24 =9/14/9/20*7/24 =9/14*20/9*7/24 =20/14*7/24 =5/12 第三小题题目再发准确点行吗

7.9×1又1/4+4.1÷4/5 =7.9×1又1/4+4.1×5/4 =5/4×(7.9+4.1) =5/4×12 =15 5/8×(2/5+1/3)÷2/3 =5/8×2/5×3/2+5/8×1/3×3/2 =3/8+5/16 =11/16 (1/5+4/5×1/8)÷1/5 =1/5×5+4/5×18×5 =1+72 =73

(-1-1/4×8/9)÷7/9 =(-1×9/7)-(1/4×9/7)×(8/9×9/7) =-9/7-9/28×8/7 =-36/28-9/28×8/7 =-36/28-36/98 =-63/49-18/49 =-81/49

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