two digit number is such that the sum of its digit is 8 if 54 is subtracted from the number its digits are reversed find the number
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let x b 1st dig and y be second digit
x+y=8
10x+y-54=10 y+x
9x -9y=54
now 2 equs and 2 unknown u can solve
x+y=8
10x+y-54=10 y+x
9x -9y=54
now 2 equs and 2 unknown u can solve
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