标题 | 日期 |
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当2y-x=5时,5(d(x-2y))的平方-3(-x+2y)-60= | 2015-11-18 |
x=3/2y写比例 | 2016-03-16 |
d(x-2y))÷4-2y+5=0和3-x÷3=(y+3)÷6 | 2016-06-02 |
16d(x-2y))³-9(x+y)²d(x-2y)) | 2016-10-19 |
[(x十y) (x一y|一(x一y)2十2y (x一y7]÷4y怎么算? | 2016-11-20 |
[(x+ 2y)²-(d(x-2y))(x+2y)]÷4y。。。。 | 2018-10-09 |
4/x=2y,x:y成什么比例 | 2020-04-29 |
40x+2y=36 82x+4y=56 X= | 2020-05-07 |