Question

8. The sum of the digits of a 2-digit number is 6. On reversing its digits, the number is 18 less than the
original number. Find the number.
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Answer 1

Answer:

Let's set up a system with twovariables: x = tens place of our answer, y = units place of our answer. So our original numberwas 42. Sum of digits is 6. Swap the order of the digits to make 24, and you have a number 18 less than the original number

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