2/5+1/4=8+5/20
4/7+2/3=12+14/21
3/11+1/2=6+11/22
2/5+3/8=16+15/40
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2/5+1/4=8+5/20
4/7+2/3=12+14/21
3/11+1/2=6+11/22
2/5+3/8=16+15/40