作业帮用加减消元法解X-Y=0 3X+5Y=32
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用加减消元法解X-Y=0 3X+5Y=32
用加减消元法解X-Y=0 3X+5Y=32
用加减消元法解X-Y=0 3X+5Y=32
X-Y=0 ①
3X+5Y=32 ②
①×5＋②,得5x+3x=32,解得x=4
②-①×3,得5Y+3Y=32,解得Y=4
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