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Mathematics 29 Online
OpenStudy (anonymous):

the tens digit is six less than the units digit of a two-digit number. When the digits are reversed, the sum of the original and reversed numbers is 132. What is the original number

OpenStudy (misty1212):

HI!!

OpenStudy (misty1212):

we can do this for sure

OpenStudy (anonymous):

ok

OpenStudy (misty1212):

lets call the ten digit number \(a\) and that makes the units digit number \(a-6\) so the number itself is \[10a+a-6\]

OpenStudy (misty1212):

like for example if the tens digit was 9, the ones digit would have to be 3 and the number would be \[93=90\times 10+9-6\]

OpenStudy (misty1212):

when we reverse them the sum is 132 i have a better idea, instead of doing algebra, lets just check what works how about \(93+39\) what does that add to?

OpenStudy (misty1212):

lol got it on the first try !!

OpenStudy (anonymous):

132

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