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The sum of the digits of a certain two-digit number is 7. Reversing its digits decreases the number by 27. Find the original number.
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The sum of the digits of a certain two-digit number is 7. Reversing its digits decreases the number by 27. Find the original number.

User David Rojo
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1 Answer

4 votes
X+Y= 7
Y-X= 27
2y=34
Y=17
X=-10
-10+17=7
17--10=27
User Guy Starbuck
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