-[x-(y-z)]去括号后应得( )A.-x+y-zB.-x-y+zC.-x-y-zD.-x+y+z
题型:单选题难度:一般来源:不详
-[x-(y-z)]去括号后应得( )A.-x+y-z | B.-x-y+z | C.-x-y-z | D.-x+y+z |
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答案
-[x-(y-z)] =-(x-y+z) =-x+y-z. 故选:A. |
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