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8 1/3 - 1 1/4= 8 4/12 - 1 3/12=7 i 1/12
7 1/4-3 3/4=29/4 -15/4=14/4=3 2/4=3 1/2
b) 2 5/6 + 3 2/5 =2 25/30 + 3 12/30 =5 37/30 = 6 7/30
5 3/5 + 3 2/3 = 5 9/15 + 3 10/15= 8 19/15 = 9 4/15
11 1/4 - 2 5/8 = 11 6/24 - 2 15/24 =270/24 - 63/24= 207/24= 69/8 =8 5/8
c) 4 1/3+ 2 3/5 - 2 1/3-3 4/5= 4 5/15+ 2 9/15 - 2 5/15- 3 12/15=6 14/15- 35/15-57/15=104/15 - 35/15 - 57/15 =12/15
12 3/8 - ( 12 6/12 - 9/12=150/12- 9/12=141/12) + 2 7/8 = 99/8-141/12 + 23/8 = to już sama oblicz i ostatni przykład bo nie mam siły xD