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x:2=y:3 3y+x=11 解方程组
人气:452 ℃ 时间:2020-06-13 06:39:48
解答
3x = 2y;
x = 11 - 3y;
33 - 9y = 2y;
33 = 11y;
y = 3;
x = 2;
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