September 2018 1 34 Report

Zapisz jak najprościej :  a) \frac{1}{3} x + \frac{1}{9}y - (\frac{2}{3}y - \frac{4}{9}x + \frac{2}{7}) b) \frac{1}{3}a(a+1)-4( \frac{1}{3}a² - \frac{1}{12}a)-a(-a+1) c) \frac{2(a+b-1)-(a-b)}{3}

dzieki dam naj


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