三元一次方程有三题不会帮下忙明天要交了(过程写一下)2x+4y+3z=6 ① x-y-z=2 ① x+y+z=111 ① 3x-2y+5z=11 ② y-z-x=-5 ② y:x=3:2 ② 5x-6y+8z=13 ③ z-x-y=4 ③ y:z=5:4 ③ (:是比值的符号)如果实在不行就写一
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![三元一次方程有三题不会帮下忙明天要交了(过程写一下)2x+4y+3z=6 ① x-y-z=2 ① x+y+z=111 ① 3x-2y+5z=11 ② y-z-x=-5 ② y:x=3:2 ② 5x-6y+8z=13 ③ z-x-y=4 ③ y:z=5:4 ③ (:是比值的符号)如果实在不行就写一](/uploads/image/z/3824683-43-3.jpg?t=%E4%B8%89%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E6%9C%89%E4%B8%89%E9%A2%98%E4%B8%8D%E4%BC%9A%E5%B8%AE%E4%B8%8B%E5%BF%99%E6%98%8E%E5%A4%A9%E8%A6%81%E4%BA%A4%E4%BA%86%EF%BC%88%E8%BF%87%E7%A8%8B%E5%86%99%E4%B8%80%E4%B8%8B%EF%BC%892x%2B4y%2B3z%3D6+%E2%91%A0+x-y-z%3D2+%E2%91%A0+x%2By%2Bz%3D111+%E2%91%A0+3x-2y%2B5z%3D11+%E2%91%A1+y-z-x%3D-5+%E2%91%A1+y%3Ax%3D3%3A2+%E2%91%A1+5x-6y%2B8z%3D13+%E2%91%A2+z-x-y%3D4+%E2%91%A2+y%3Az%3D5%3A4+%E2%91%A2+%28%3A%E6%98%AF%E6%AF%94%E5%80%BC%E7%9A%84%E7%AC%A6%E5%8F%B7%EF%BC%89%E5%A6%82%E6%9E%9C%E5%AE%9E%E5%9C%A8%E4%B8%8D%E8%A1%8C%E5%B0%B1%E5%86%99%E4%B8%80)
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