求1/2x-2/3y=-15/2,1/2y-5/3y=-4/3分别求出x,y的值
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求1/2x-2/3y=-15/2,1/2y-5/3y=-4/3分别求出x,y的值
求1/2x-2/3y=-15/2,1/2y-5/3y=-4/3分别求出x,y的值
求1/2x-2/3y=-15/2,1/2y-5/3y=-4/3分别求出x,y的值
首先你题目给错了吧!
先通分:3x-4y=45 ①
3x-10y=8 ②
①-②得6y=37
y=37/6 ③
将③带入①或②得:
x=209/9
综上所述得:
x=209/9
y=37/6
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