The sum of the digits of a two digit number is 9.The nimber obtained by interchanging its digits is 9 less than thrice the original number. Find the no.
Please answer correctly with proper explanation in only one variable
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Answer:
let ones place digit ve x
tens place = 9-x
no formed = 10 [9-x) + x
by intechanging = 10x + 9-x
10x+9-x = 90-x+x
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