a-(a-1/2)=1-(a-2)/3
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Answer:
a-(a-1)/2=1-(a-2)/3
(2a-a+1)/2=(3-a+2)/3
(a+1)/2=(5-a)/3
3(a+1)=2(5-a)
3a+3=10-2a
3a-2a=10-3
a=7
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