bjr
29
3/5 = 3x7 / 5x7 = 21/35
3/4 = 3x15 / 4x15 = 45/60
80/100 = 80:20 / 100:20 = 4/5
49/21 = 49:7 / 21:7 = 7/3
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bjr
29
3/5 = 3x7 / 5x7 = 21/35
3/4 = 3x15 / 4x15 = 45/60
80/100 = 80:20 / 100:20 = 4/5
49/21 = 49:7 / 21:7 = 7/3