4y+6x=6 6y+2x=4.6
1个回答
4y+6x=6 (1)
6y+2x=4.6 (2)
将(2)*3得18y+6x=13.8 (3)
(3)-(1)得14y=7.8
得y=39/70
代入(1)得x=23/35
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