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数学
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3x-2y=11,2x+3y=16
人气:306 ℃ 时间:2020-03-18 15:53:24
解答
3x-2y=11,1
2x+3y=162
1式*3得 9x-6y=333
2式*2得 4x+6y=32 4
3式+4式得 13x=65
x=5
y=(5*3-11)/2=2
x=5y=2
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