7/3-3/1+7/4-3/2简便计算还有12/3+13/12-13/7+12/11
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/23 13:16:50
7/3-3/1+7/4-3/2简便计算还有12/3+13/12-13/7+12/11
我晕了,
我晕了,
![7/3-3/1+7/4-3/2简便计算还有12/3+13/12-13/7+12/11](/uploads/image/z/2635447-31-7.jpg?t=7%2F3-3%2F1%2B7%2F4-3%2F2%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%E8%BF%98%E6%9C%8912%2F3%2B13%2F12-13%2F7%2B12%2F11)
你写反了,呵呵.
3/7-1/3+4/7-2/3
=(3/7+4/7)-(1/3+2/3)
=1-1
=0
3/12+12/13-7/13+11/12
=(3/12+11/12)+(12/13-7/13)
=14/12+5/13
=7/6+5/13
=91/78+30/78
=121/78
3/7-1/3+4/7-2/3
=(3/7+4/7)-(1/3+2/3)
=1-1
=0
3/12+12/13-7/13+11/12
=(3/12+11/12)+(12/13-7/13)
=14/12+5/13
=7/6+5/13
=91/78+30/78
=121/78
7/3-3/1+7/4-3/2简便计算还有12/3+13/12-13/7+12/11
2/13*1/7+11/13/7简便计算(1/3+1/4-1/2)/1/12简便计算
怎么简便计算 3/4+7/13-1/4+6/13怎么简便计算
1/13+12/13*(5/2-1/3)可以简便计算就简便计算
3/7-0.5+12-11.5简便计算
12/[(3/4+3/7)*7/11]简便计算
能简便就简便计算 2/3*2/7+7/12 1/7*6+1/7
7/8+3/4-11/12简便计算急
1/3+4/9-7/12简便计算
(5/12-3/5)-(2/5-7/12)简便计算
1-1/3+7/12-9/20+11/30-13/42简便计算
简便计算:(11/12-7/6+3/4-13/16)×(-48)