解方程組:x+1/3=2y2(x+1)?y=11
解方程組:
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數(shù)學(xué)人氣:236 ℃時(shí)間:2020-09-30 18:39:23
優(yōu)質(zhì)解答
解法(1):由原方程組得x=6y?12x?y=9把①代入②得2(6y-1)-y=9,即y=1;代入①得:x=5;∴原方程組的解為x=5y=1.解法(2):由x+13=2y得:x+1=6y,把①代入2(x+1)-y=11得:12y-y=11,即y=1;把y=1代入①...
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