用3x3x加x加6等于26x9写出八个不同的比例。

来源：蜘蛛抓取(WebSpider) 时间：2018-03-21 13:46 标签： 100减3x 除以2等于8
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1x3x5+3x9x15+7x21x35分之1x2x3+3x6x9+7x14x21 等于多少
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(1x2x3+3x6x9+7x14x21 )/(1x3x5+3x9x15+7x21x35)=3(1×2+6×9+7×14×7）/3（1×5+9×15+7×7×35）=(1×2+6×9+7×14×7）/(1×5+9×15+7×7×35）=14(4+7×7)/5(1+3×9+7×7×7）=14×53/5×7(4+7×7)=14×53/35×53=14/35
这个是什么号啊 是除还是分之啊
你确定这是对的？可是老师说先算上面的再算下面的 要一步一步算
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过程有木有啊
这样做原式=（1*3*5）*（1+3+7）分之（1*2*3）*（1+3+7）=5分之2就这么点吗 没了 ？ 能不能在完整点不对好像错了。那怎么写啊1*2*3+3*6*9+7*14*21
=1*2*3+3*3*2*3*3+7*7*2*7*3
=6*（1+3*3*3+7*7*7）
1*3*5+3*9*15+7*21*35
=1*3*5+3*3*3*3*5+7*3*7*7*7...
不对好像错了。
那怎么写啊
1*2*3+3*6*9+7*14*21
=1*2*3+3*3*2*3*3+7*7*2*7*3
=6*（1+3*3*3+7*7*7）
1*3*5+3*9*15+7*21*35
=1*3*5+3*3*3*3*5+7*3*7*7*7*5
=15*（1+3*3*3+7*7*7）
分子分母约分后等于5分之2
你确定这样写吗
你怎么知道是正确的？
过程在这啊，你几年级？
扫描下载二维码437: Omega 3 - ScienceDirect
Export JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page., October 2008, Page S206Author links open overlay panelShow moreCheck if you have access through your login credentials or your institution.ororRecommended articlesCiting articles (0)六三班智聪同学根据2x9=3x6写出了比例，怎么写的解答_百度知道
六三班智聪同学根据2x9=3x6写出了比例，怎么写的解答
我有更好的答案
比例是外项相乘等于内项相乘2：3=6 : 9
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