2道二元一次方程组,(3X-1)÷2—(X-y)÷3=1 0.4X+0.3y=2.1(X-y)÷4—(X+2y)÷3=1 (X-3)÷3=(y+6)÷5是上下一组,不是左右一组。注意了
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![2道二元一次方程组,(3X-1)÷2—(X-y)÷3=1 0.4X+0.3y=2.1(X-y)÷4—(X+2y)÷3=1 (X-3)÷3=(y+6)÷5是上下一组,不是左右一组。注意了](/uploads/image/z/8644314-66-4.jpg?t=2%E9%81%93%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%BB%84%2C%EF%BC%883X-1%EF%BC%89%C3%B72%E2%80%94%EF%BC%88X-y%EF%BC%89%C3%B73%3D1+0.4X%2B0.3y%3D2.1%EF%BC%88X-y%EF%BC%89%C3%B74%E2%80%94%EF%BC%88X%2B2y%EF%BC%89%C3%B73%3D1+%EF%BC%88X-3%EF%BC%89%C3%B73%3D%EF%BC%88y%2B6%EF%BC%89%C3%B75%E6%98%AF%E4%B8%8A%E4%B8%8B%E4%B8%80%E7%BB%84%EF%BC%8C%E4%B8%8D%E6%98%AF%E5%B7%A6%E5%8F%B3%E4%B8%80%E7%BB%84%E3%80%82%E6%B3%A8%E6%84%8F%E4%BA%86)
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