jak to obliczyć? 3i 1/4 - 2 i 2/9= jak to rozpisać 4 i 1/2 -2 i 3/5= 3 i 2/9 - 1 i 5/6= 5 i 2/7- 2 i 3/4= 2 i 1/3 - 1 i 5/7
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3 1/4-2 2/9=13/4-20/9=117/36-80/36=37/36=1 1/37
4 1/2-2 3/5=9/2-13/5=45/10-26/10=19/10=1 9/10
3 2/9-1 5/6=29/9-11/6=58/18-33/18=25/18=1 7/18
5 2/7-2 3/4=37/7-11/4=148/28-77/28=71/28=2 15/28
2 1/3-1 5/7=7/3-12/7=49/21-36/21=13/21