If point (a,0),(0,b)and(1,1)are collinear,then find the value of 1/a+1/b
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a(b-1)+0(1-0)+1(0-b)=0
ab-a-b=0
ab=a+b
1/ab= 1/a+1/b
ab-a-b=0
ab=a+b
1/ab= 1/a+1/b
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