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The sum of the digits of two digit number is 15. One third of the number diminished by 12 is 17. What is the number? Show your solution.
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The second condition says    ("One third of the number diminished by 12 is 17.")
 = 17   --->  x - 36 = 51  --->  x = 51 + 36  --->  x = 87.
The first condition is unnecessary and does not used in the solution.
Happily, it is consistent with the found solution.
Answer. The number is 87.
 = 17   --->  x - 36 = 51  --->  x = 51 + 36  --->  x = 87.
The first condition is unnecessary and does not used in the solution.
Happily, it is consistent with the found solution.
Answer. The number is 87.