The answer is 3,5,8 but I need to know the steps to solve this problem
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Let the numbers be a, b, c, where c is the largest. Let a be the smallest.

a+b+c=16; c=a+b, so c+c=16, c=8 and a+b=8.

3a-1=c=8, 3a=9, a=3. Since b=8-a=b=5.

The numbers are 3, 5, 8.
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