oblicz skracając, jesli to mozliwe a) 9*7/18= b) 15*4 2/5= c) 10/21*7/15= d) 3 1/3*3 3/5= e) 11 :8 1/4= f) 8/11:12= g) 9/14:6/21= h) 1 3/5:4 4/7= PLIS NA JUTRO !!!!
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rozw w zał.