3/8 : 2/3
5/8 : 15/32
12/31 : 1 4/11
3 1/2 : 5/9
4 1/5 : 7/15
8 2/3 : 5/13
/ to jest kreska ułamkowa (jakby ktoś nie wiedział)
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1. 3/8:2/3=3/8x3/2=9/16
2. 5/8:15/32=5/8x32/2=1/1x4/3=4/3=1 1/3
3. 12/31:1 4/11=12/31x11/15=4/31x11/5=44/155
4. 3 1/2:5/9=7/2x9/5=63/10=6 3/10
5. 4 1/5:7/15=21/5x15/7=3/1x3/1=9
6. 82/3:5/13=26/3x13/5=338/15=22 8/15