Question

. 21. Seven times a two digit number is equal to four times the number obtained by reversing the order of its digits. If the difference of the digits is 3, determine the number​

Answer 1

. 21. Seven times a two digit number is equal to four times the number obtained by reversing the order of its digits. If the difference of the digits is 3, determine the number​

Answer 2

Answer:

7xy=4yx

x-y=3

so x&y can be any of the following pairs

0,3 ; 1,4 ; 2,5 ; 3,6 ; 4,7 ; 5,8 ; or 6,9