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3 i 1/8 - 1 i 3/4 = 25/8 - 6/8 = 19/8 = 2 i 3/8 - rowniez podstawiamy mianownik do cyfry 8
2 - 1 i 3/4 = 1/4
4 i 2/1 - czy na pewno dobrze przepisane?
1 przypadek- 6 - 1 i 3/4 = 4 i 1/4
2 przypadek- 4 i 1/2 - 1 i 3/4 = 17/4 - 3/4 = 14/4 = 3 i 2/4 = 3 i 1/2 - do 4 podstawiamy
3 i 2/3 - 1 i 3/4= 38/12 - 13/12 = 25/12 = 2 i 1/12 - podstawiamy do 12
2 i 1/4 - 1 i 3/4 = 9/4 - 7/4= 2/4 w skrocie 1/2