1/3+1/5+7/30=?1-(7/9+3/4)=?5/7+5/14-3/5=?2/11-(2/3+2/11)=?5/
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/08/25 19:08:11
1/3+1/5+7/30=?1-(7/9+3/4)=?5/7+5/14-3/5=?2/11-(2/3+2/11)=?5/7-X=1/4 一共5题,
1/3+1/5+7/30
=10/30+6/30+7/30
=23/30
1-(7/9+3/4)
=1-(28/36+27/36)
=1-55/36
=-19/36
5/7+5/14-3/5=50/70+25/70-42/70=33/70
2/11-(2/3+2/11)=2/11-2/3-2/11=-2/3
5/7-X=1/4
X=5/7-1/4
X=20/28-7/28
X=13/28
=10/30+6/30+7/30
=23/30
1-(7/9+3/4)
=1-(28/36+27/36)
=1-55/36
=-19/36
5/7+5/14-3/5=50/70+25/70-42/70=33/70
2/11-(2/3+2/11)=2/11-2/3-2/11=-2/3
5/7-X=1/4
X=5/7-1/4
X=20/28-7/28
X=13/28
1=5,2=7,3=9,4=11 5=?
1/3-1/2=-4/3,3/8-3/5=-9/40,4/11-4/7=-16/77,5/14-5/9=-25/126,
2/3-2/1=-4/3 3/8-3/5=-9/40 4/11-4/7=-16/77 5/14-5/9=-25/126
1+3+5+7+9+11+--------+2n-1=?
5/7+1/8=?2/3+5/9=?3/8+7/12=?4/5-3/10=?8/9-5/7=?11/14-21/11=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+.100=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+1000=?
5+8+11+14+…+29+30=?1-2+3-4+5-6+7-…-48+49=?
2/5+3/7+2/9+5/7+3/5+11/15+12/17+1/9+2/5+4/7+3/8=?
2 9999 +19999 = = (8/9+1又3/7+6/11)除以(3/11+5/7+4/
1+2-3-4+5+5-7-8+9+10-11-12+.+2009=?
a[2][4]={1,2,3,4,5,6,7,8};b[4][3]={1,2,3,4,5,6,7,8,9,10,11,1