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2. 5 i 5/9 : 3 i 1/3 = 50/9 : 10/3 = 50/9 * 3/10 = 5/3 = 1 i 2/3
3. 2 i 1/4 * 2/3 = 9/4 * 2/3 = 3/2 = 1 i 1/2
4. 5/6 + 1 i 2/3 = 5/6 + 1 i 4/6 = 1 i 9/6 = 2 i 3/6 = 2 i 1/2
5. 1- 1/2 * 1/3 = 1 - 1/6 = 6/6 - 1/6 = 5/6
6.3 i 2/7 + 1/7 * 6 = 3 i 2/7 + 6/7 = 3 i 8/7 = 4 i 1/7
7. 2 i 4/5 : 7/12 = 14/5 * 12/7 = 24/5 = 4 i 4/5
2)5 i 5/9:3 i 1/3=50/9:10/3=50/9*3/10 (skróć 50 i 10 przez 10, skróć 9 i 3 przez 3)
=5/3= 1 i 2/3
3)2 i 1/4*2/3=9/4*2/3 (skróć 9 i 3 prze 3,skróć4 i 2 przez 2) =3/2=1 i 1/2
4)5/6+1 i 2/3=5/6+5/3=5/6+10/6=15/6=2 i 3/6=2 i 1/2
5)1-1/2*1/3=1-1/6=6/6-1/6=5/6
6)3 i 2/7+1/7*6=23/7+1/7*6/1=23/7+6/7=29/7=4 i 1/7
7)2 i 4/5:7/12=14/5:7/12=14/5*12/7 (skróć 14 i 7 przez 7 )=24/5=4 i 4/5