the units digit of a two digit number is 3 and seven times the sum of digits is the number itself .Find the number
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Let the tens place be X .
the units place digits is 3 .
therefore - > Number = ( 10x + 3 )
Given
7 ( x + 3 ) = ( 10x + 3 )
7 x + 21 = 10x + 3
Therefore - > 10x - 7x = 21 - 3
= > 3 x = 18
or x = 6
using x = 6 in equation ( 1 ) ..
The number is 63 .
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