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18-10-2020
Mathematics

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When you reverse the digits in a certain two-digit number you decrease its value by 45. What is the number if the sum of its digits is 9?

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serenavass serenavass

19-10-2020

Answer:

72

Step-by-step explanation:

x+y=9 possible numbers

1 and 8

2 and 7

3 and 6

4 and 5

9 and 0

so

81-18=63

72-27=45 so this is the right number

63-36=27

54-45=9

90-9=81

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