A 3-digit number has, from left to right...

A 3-digit number has, from left to right, the digits a, b and c with `agtc.` When the number with the digits rversed is subtracted from the original number, the unit's digit in the difference is 4. The next two digits, from right to left, are

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In a two digit number, the sum of the digits is 7. If the number with the order of digits reversed is 28 greater than twice the unit's digit of the original number, find the number.

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