Odpowiedzi

2009-12-07T14:51:47+01:00
17 2/8 - 8 5/9 =
= 17 18/72 - 8 40/72 =
= 16 90/72 - 8 40/72 =
= 8 50/72 = 8 25/36

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14 7/9 - 7 2/3 = 14 7/9 - 7 6/9 = 7 1/9
2009-12-07T15:18:54+01:00
17i2/8 - 8i5/9=17i18/72=16i90/72-8i40/72=8i 40/72=8i5/9

14i7/9 - 7i2/3=14i7/9 - 7i6/9=7i1/9

7i5/8 - 3i3/7= 7i35/56 - 3i24/56= 4i 11/56

9i3/7 - 4i1/9= 9i27/63 - 4i7/63= 4i20/63