August 2022 1 59 Report
zadanie 6 str. 30 oblicz skracając, jeśli to możliwe. 3/7*5/9 , 4/4*7/16 , 6/11*5/9 , 8/21*7/12 , 5/6*9/20 , 4/7*21/36 . 1 1/3*2 1/4, 1 1/2*1 5/9 , 2 5/8*1 1/3.​

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