UC知道数学简算,8858~~~
来源：百度知道 编辑：UC知道 时间：2024/06/01 01:35:38
一. 1又4/17*(2又2/3-3/4)+17又11/12除17/21
二. 6又7/10*121+444除40/99+67*21.2
三. 132又1/130除131
四. (1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)
注:/前是分子,后面是分母,要分数简算过程!帮帮我 帮帮我 帮帮我 帮帮我~~~~~好的追分!!!!
快点那!今晚就要答案~~~~谢谢!!加油!要求准确简算!!nmzqhan列举一下谢谢!!!三易巾凡谢谢!我20:30之前挑答案,肯定有追加!大家也8858!!三我算的得261/130 8858!!
二. 6又7/10*121+444除40/99+67*21.2
三. 132又1/130除131
四. (1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)
注:/前是分子,后面是分母,要分数简算过程!帮帮我 帮帮我 帮帮我 帮帮我~~~~~好的追分!!!!
快点那!今晚就要答案~~~~谢谢!!加油!要求准确简算!!nmzqhan列举一下谢谢!!!三易巾凡谢谢!我20:30之前挑答案,肯定有追加!大家也8858!!三我算的得261/130 8858!!
一. 1又4/17*(2又2/3-3/4)+17又11/12除17/21
=21/17*(8/3-3/4)+215/12*21/17
=21/17*(23/12+215/12)
=21/17*119/6
=49/2
二. 6又7/10*121+444除40/99+67*21.2
=67/10*121+444*99/40+67*21.2
=67*(12.1+21.2)+11.1*99
=67*33.3+33*33.3
=3330
三. 132又1/130除131
==(131+131/130)/131
==1+1/130
=131/130
四. (1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4)
=(1+1/2+1/3+1/4)*(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4)*(1/2+1/3+1/4)-1/5*(1/2+1/3+1/4)
=(1+1/2+1/3+1/4)*1/5-1/5*(1/2+1/3+1/4)
=1/5
3 (132+1/130)/131
=(132*130+1)/(130*131)
=(130*131+130+1)/(130*131)
=1+1/130
=131/130
其他题目都用提取公因数算