ułamki 2 całe i 7, 20 : 1 c i 1,8
2 i 7/20 = 47/20 (mnożysz 2 * mianownik tj 20 i dodajesz licznik tj 7)
1 i 1/8 = 9/8
47/20 : 9/8 = 47/20 * 8/9 = 94/45 = 2 i 4/45
2 7/20: 1 1/8=47/20:9/8=47/20 *8/9=47*2/5*3=94/45=2 4/45
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2 i 7/20 = 47/20 (mnożysz 2 * mianownik tj 20 i dodajesz licznik tj 7)
1 i 1/8 = 9/8
47/20 : 9/8 = 47/20 * 8/9 = 94/45 = 2 i 4/45
2 7/20: 1 1/8=47/20:9/8=47/20 *8/9=47*2/5*3=94/45=2 4/45