【初一数学题】二元一次方程组 【紧急】【1】:若二元一次方程组{ax+y=0,x+by=1 的解释{x=1,y= -1,那么a,b的值分别为()A.1和0B.1和1/2C.-1和0D.0和0【2】:已知|x+y+1|+(x-y+3)²=0,则代数式(x+y)
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![【初一数学题】二元一次方程组 【紧急】【1】:若二元一次方程组{ax+y=0,x+by=1 的解释{x=1,y= -1,那么a,b的值分别为()A.1和0B.1和1/2C.-1和0D.0和0【2】:已知|x+y+1|+(x-y+3)²=0,则代数式(x+y)](/uploads/image/z/1683607-31-7.jpg?t=%E3%80%90%E5%88%9D%E4%B8%80%E6%95%B0%E5%AD%A6%E9%A2%98%E3%80%91%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%BB%84+%E3%80%90%E7%B4%A7%E6%80%A5%E3%80%91%E3%80%901%E3%80%91%EF%BC%9A%E8%8B%A5%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%BB%84%7Bax%2By%3D0%2Cx%2Bby%3D1+%E7%9A%84%E8%A7%A3%E9%87%8A%7Bx%3D1%2Cy%3D+-1%2C%E9%82%A3%E4%B9%88a%2Cb%E7%9A%84%E5%80%BC%E5%88%86%E5%88%AB%E4%B8%BA%EF%BC%88%EF%BC%89A.1%E5%92%8C0B.1%E5%92%8C1%2F2C.-1%E5%92%8C0D.0%E5%92%8C0%E3%80%902%E3%80%91%EF%BC%9A%E5%B7%B2%E7%9F%A5%7Cx%2By%2B1%7C%2B%EF%BC%88x-y%2B3%EF%BC%89%26%23178%3B%3D0%2C%E5%88%99%E4%BB%A3%E6%95%B0%E5%BC%8F%EF%BC%88x%2By%EF%BC%89)
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