1 1/4*2/5-1/3=1/6
1) 1 1/4*2/5=5/4*2/5=5*2/4*5=1/2
2) 1/2-1/3=3/6-2/6=1/6
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1 1/4*2/5-1/3=1/6
1) 1 1/4*2/5=5/4*2/5=5*2/4*5=1/2
2) 1/2-1/3=3/6-2/6=1/6
1 1/4•2/5-1/3=1/2-1/3=1/6