Question

Four times a certain two digit number is seven times the number obtained on interchanging its digits if the difference between the digits is 4
Find the number

Answer 1

Seven times a two digit number is equal to four times the number

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 number

Answer 2

sorry I'm not sure
I can't understand your given step