Oblicz 1 2/3+3/4=......... 1 3/5-3/10=.......... 1 2/7*3 1/3=........... 1 2/3:5/12+............ Oblicz 2 4/5+1/4=............ 1 3/4-3/8=........... 2 2/9*1 3/5=.......... 2 2/5:1 1/5=..........
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1 2/3+3/4= 1 8/12+9/12=1 17/12=2 5/12
1 3/5- 3/10- 1 6/10-3/10=1 3/10
1 2/7*3 1/3= 9/7*10/3=30/7=4 2/7
2 4/5+ 1/4=2 16/20+5/20=2 21/20=3 1/20
1 3/4-3/8=1 6/8-3/8= 1 3/8
2 2/9+1 3/5=20/9*8/5=32/9=3 5/9
2 2/5: 1 1/5=12/5:6/5=12/5*5/6=2
1 2/3 + 3/4 = 5/3 + 3/4 = 20/12 + 9 /12 =29/12 = 2 5/12
1 3/5 - 3/10 = 8/5 - 3/10 = 16/10 - 3/10 = 13/10 = 1 3/10
1 2/7 * 3 1/3 = 9/7 * 10/3 = 90/27 =10/3 =2 1/3
1 2/3 : 5/12 = 5/3 : 5/12 = 5/3 * 12/5 = 60/15 =4
2 4/5 + 1/4 = 14/5 +1 /4= 56/20 + 5/20 = 61/20 =3 1/20
1 3/4 -3/8 = 7/4 -3/8 = 14/8 - 3/8 = 11 /8 = 1 3/8
2 2/9 * 1 3/5 = 20/9 * 8/5 = 160/45 =32/9 = 3 5/9
2 2/5 : 1 1/5 = 12/5 : 6/5 = 12/5 * 5/6 = 60/30 = 2