August 2022 1 12 Report

упростить выражение:

 

[tex](\frac{m-n}{mn} + \frac{3m+n}{m^{2} - mn} - \frac{3n+m}{n^{2} - mn}) : \frac{2m+2n}{mn} + \frac{2m}{n-m} [/tex]

 

варианты ответов:

а) -3

в) -4

с) m - n

d)-1

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