Solve In :
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Originally Posted by dhiab Solve In : If we rearrange the equation we find . You need to substitute an integer in order to get an integer . For this to happen, needs to be a multiple of 13. Have a go from here...
Originally Posted by Prove It . You need to substitute an integer in order to get an integer . . The smallest value of x that will satisfy is 2. Since gcd(6,13)=1, the next next value will be 2+13=15, the next 28 and so on. The largest value of x is less than or equal to (Why?)
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