求计算x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)的结果和过程
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求计算x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)的结果和过程求计算x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)的结果和过程求计算x
求计算x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)的结果和过程
求计算x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)的结果和过程
求计算x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)的结果和过程
x/(x-y+z)+(2x+2z)/(y-x-z)-(y+z)/(y-x-z)
＝x/(x-y+z)-(2x+2z)/(x-y+z)+(y+z)/(x-y+z)
=(x-2x-2z+y+z)/(x-y+z)
=(-x+y-z)/(x-y+z)
=-1
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