SOLUTION: seven times a two digit number is equal to four times the number obtained by reversing the order of its digits.if the difference between the digits is 3.find the no

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Question 872716: seven times a two digit number is equal to four times the number obtained by reversing the order of its digits.if the difference between the digits is 3.find the no
Answer by lwsshak3(11628) About Me  (Show Source):
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seven times a two digit number is equal to four times the number obtained by reversing the order of its digits.if the difference between the digits is 3.find the no
..
let u=units digit
let t=tens digit
u-t=3
u=t+3
..
7(10t+u)=4(10u+t)
70t+7u=40u+4t
70t+7t+21=40t+120+4t
33t=99
t=3
u=6
number: 36