一道我算了10遍答案都不一样的数学题(七年级)如果是题错了,请说明哪错了.如果题没错请写出详细的计算过程,关于x,y的方程组{2x+3y=k 的解x,y的和为12,则k的值为( ) 3x+5y=k+2
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![一道我算了10遍答案都不一样的数学题(七年级)如果是题错了,请说明哪错了.如果题没错请写出详细的计算过程,关于x,y的方程组{2x+3y=k 的解x,y的和为12,则k的值为( ) 3x+5y=k+2](/uploads/image/z/918880-16-0.jpg?t=%E4%B8%80%E9%81%93%E6%88%91%E7%AE%97%E4%BA%8610%E9%81%8D%E7%AD%94%E6%A1%88%E9%83%BD%E4%B8%8D%E4%B8%80%E6%A0%B7%E7%9A%84%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E4%B8%83%E5%B9%B4%E7%BA%A7%EF%BC%89%E5%A6%82%E6%9E%9C%E6%98%AF%E9%A2%98%E9%94%99%E4%BA%86%2C%E8%AF%B7%E8%AF%B4%E6%98%8E%E5%93%AA%E9%94%99%E4%BA%86.%E5%A6%82%E6%9E%9C%E9%A2%98%E6%B2%A1%E9%94%99%E8%AF%B7%E5%86%99%E5%87%BA%E8%AF%A6%E7%BB%86%E7%9A%84%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B%2C%E5%85%B3%E4%BA%8Ex%2Cy%E7%9A%84%E6%96%B9%E7%A8%8B%E7%BB%84%7B2x%2B3y%3Dk+%E7%9A%84%E8%A7%A3x%2Cy%E7%9A%84%E5%92%8C%E4%B8%BA12%2C%E5%88%99k%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%88+%EF%BC%89+3x%2B5y%3Dk%2B2)
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