5-1/3-1/2= a-1/3a=

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5-1/3-1/2=a-1/3a=5-1/3-1/2=a-1/3a=5-1/3-1/2=a-1/3a=1/62/3a25/6

5-1/3-1/2= a-1/3a=
5-1/3-1/2= a-1/3a=

5-1/3-1/2= a-1/3a=
1/6 2/3a

25/6