Question 647278: The units of a two digit number is 3 and seven times the sum of the digits is the number itself. find the number? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! The units of a two digit number is 3 and seven times the sum of the digits is the number itself. find the number?
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let u=units digit=3
let t=tens digit
10t+u=number
..
7(u+t)=10t+u
7u+7t=10t+u
21+7t=10t+3
3t=18
t=6
10t+u=60+3=63
number=63
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