(-3/2)-13/4+(-13/3)-8/3=,49.7-[-23又3/4+(18.7-25.25]=,|12.7-(
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(-3/2)-13/4+(-13/3)-8/3=,49.7-[-23又3/4+(18.7-25.25]=,|12.7-(-8.9)|=,4.73-[2又2/3-(1又4/5+2.65]-1/2
最后一个分数是1/3,2.65改为2.63
最后一个分数是1/3,2.65改为2.63
![(-3/2)-13/4+(-13/3)-8/3=,49.7-[-23又3/4+(18.7-25.25]=,|12.7-(](/uploads/image/z/18311898-66-8.jpg?t=%28-3%2F2%29-13%2F4%2B%28-13%2F3%29-8%2F3%3D%2C49.7-%5B-23%E5%8F%883%2F4%2B%2818.7-25.25%5D%3D%2C%7C12.7-%28)
(-3/2)-13/4+(-13/3)-8/3
=-6/4-13/4-13/3)-8/3
=-19/4-21/3
=-11又3/4
49.7-[-23又3/4+(18.7-25.25]
=49.7-[-23-3/4+18.7-25-1/4]
=49.7-[-49+18.7]
=49.7+49-18.7
=31+49
=80
|12.7-(-8.9)|
=|12.7+8.9|
=21.6
4.73-[2又2/3-(1又4/5+2.63)]-1/3
=4.73-[2又2/3-1又4/5-2.63]-1/3
=4.73-2又2/3+1又4/5+2.63-1/3
=4.73+1又4/5+2.63-2又2/3-1/3
=7.36+1.8-3
=6.16
=-6/4-13/4-13/3)-8/3
=-19/4-21/3
=-11又3/4
49.7-[-23又3/4+(18.7-25.25]
=49.7-[-23-3/4+18.7-25-1/4]
=49.7-[-49+18.7]
=49.7+49-18.7
=31+49
=80
|12.7-(-8.9)|
=|12.7+8.9|
=21.6
4.73-[2又2/3-(1又4/5+2.63)]-1/3
=4.73-[2又2/3-1又4/5-2.63]-1/3
=4.73-2又2/3+1又4/5+2.63-1/3
=4.73+1又4/5+2.63-2又2/3-1/3
=7.36+1.8-3
=6.16
-8又17分之3*14又15分之13-4*(-14又15分之13)+(-4又17分之3)*(+2又15分之2) = =
13又13分之2-2又4分之1-7又4分之3=?
1+2又1/6+3又1/13+4又1/20+5又1/30+6又1/42+7又1/56+8又1/72+9又1/90+10又
找规律填空 1又1/4、3又2/9、5又3/16、7又5/25、9又8/36、11又13/49、( )
找规律 1又1/4,5又1/9,9又2/16,13又3/25,17又5/36,21又8/49,( )
找规律2又1/4,3又1/9,5又2/16,8又3/25,12又5/36,17又8/49,23又13/64,
(5又13分之1-3又8分之3)*(6又4分之3-2又4分之1*3)=
(7/18*4又1/2+1/6)/(13又1/3+3又1/3/5/16)/2又7/8=
(-7又3/2)+(-3又3/1)+8又4分之一=(-3又二分之一)
1 又1/2+3又1/4+5又1/8+7又1/16+9又1/32+11又1/64+13又1/128+15又1/256+1
10-9又5/6+8又7/12-7又9/20+6又11/30-5又13/42+4又15/56-3又17/72+2又19/
1又1/20+2又1/30+3又1/42+4又1/56+5又1/72+6又1/90+7又1/110+8又1/132=?