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2. 4 14/21 - 2 3/21 = 4 11/21
3. 7 1/10 - 6 8/10 = 3/10
4. 15/1 x 16/3 = 80
5. 7/3 x 12/7 = 4
6. 25/4 : 15/1 = 25/4 x 1/15 = 5/12
7. 30/7 : 20/9 = 30/7 x 9/20 = 27/14
8. 6/5 x 3/4 + 3 = 3 9/10
9. 9/4 : 5/3 - 1/6 = 9/4 x 3/5 -1/6 = 1 7/20
MAM nadzieję , że pomogłem. Przeoraszam za długi czas oczekiwania