Asked by Lim sook feng
I am a two-digit number. When you add the two digits, you get 12. When you subtract the two digits, you get 6. What number am I?
Answers
Answered by
John
x + y = 12
x-y = 6
add these equations together to get
2x = 18 so x must be 9
Can you find y which represents the other digit?
x-y = 6
add these equations together to get
2x = 18 so x must be 9
Can you find y which represents the other digit?
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