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Problem Num : 1 Type: None Topic:Equation  Adjustment# : Difficulty: 2
Category	Diophantine Equation
Analysis
Solution/Hint

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Problem Num : 2 Type: Many Variables Topic:Equation  Theme:Integer Property Adjustment# : 0 Difficulty: 2
Category	Diophantine Equation
Analysis	the range of x is limited.
Solution/Hint

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Problem Num : 3 Type: Modification Topic:Equation  Theme:Many Variables Adjustment# : 0 Difficulty: 2
Category	Diophantine Equation
Analysis	Eliminate a variable.
Solution/Hint	a/c = 2/3 let say a=2k and c=3k (k is integer) then bk = 7, b= 7/k but 7/k >1 so.. k<7.. so k=1 b=7, a=2, c=3

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