七年级2道数学题
(+1又3/4)-5/6-1又1/6+1/20-(+1/6)-(-1/4)-(+1/3)-(-1/2)过程能写就写上吧谢谢了!...
(+1又3/4)-5/6-1又1/6+1/2
0-(+1/6)-(-1/4)-(+1/3)-(-1/2) 过程能写就写上吧 谢谢了! 展开
0-(+1/6)-(-1/4)-(+1/3)-(-1/2) 过程能写就写上吧 谢谢了! 展开
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(+1又3/4)-5/6-1又1/6+1/2
=7/4-5/6-7/6+1/2
=21/12-10/12-14/12+6/12
=3/12=1/4
0-(+1/6)-(-1/4)-(+1/3)-(-1/2)
=0-1/6+1/4-1/3+1/2
=0-2/12+3/12-4/12+6/12
=3/12=1/4
=7/4-5/6-7/6+1/2
=21/12-10/12-14/12+6/12
=3/12=1/4
0-(+1/6)-(-1/4)-(+1/3)-(-1/2)
=0-1/6+1/4-1/3+1/2
=0-2/12+3/12-4/12+6/12
=3/12=1/4
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(+1又3/4)-5/6-1又1/6+1/2
=1又3/4-5/6-1又1/6+1/2
=(1又3/4+1/2)-(5/6+1又1/6)
=2又1/4-2
=1/4
0-(+1/6)-(-1/4)-(+1/3)-(-1/2)
=-1/6+1/4-1/3+1/2
=(-1/6-1/3+1/2)+1/4
=0+1/4
=1/4
=1又3/4-5/6-1又1/6+1/2
=(1又3/4+1/2)-(5/6+1又1/6)
=2又1/4-2
=1/4
0-(+1/6)-(-1/4)-(+1/3)-(-1/2)
=-1/6+1/4-1/3+1/2
=(-1/6-1/3+1/2)+1/4
=0+1/4
=1/4
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2010-09-26
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那不是能化成 21/12-10/12-14/12+6/12=1/4
第二
6/12+3/12-4/12+6/12=11/12
第二
6/12+3/12-4/12+6/12=11/12
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2010-09-26
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csdfhjghjfh 感到哈达哈达法时光撒和和豆腐干法十分敢死队反函数三点会钢丝绳
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(+1+3/4)-5/6-(1+1/6)+1/2
=7/4-5/6-7/6+1/2
=21/12-10/12-14/12+6/12
=1/4
0-(+1/6)-(-1/4)-(+1/3)-(-1/2)
=0-1/6+1/4-1/3+1/2
=0-2/12+3/12-4/12+6/12
=-3/4
=7/4-5/6-7/6+1/2
=21/12-10/12-14/12+6/12
=1/4
0-(+1/6)-(-1/4)-(+1/3)-(-1/2)
=0-1/6+1/4-1/3+1/2
=0-2/12+3/12-4/12+6/12
=-3/4
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