Question

the value of a certain two digit number is 9 times the sum of its digits. it the digits are reversed, the resulting number is 63 less than the original number. find the original number

Answer 1

Explanation:

10x+y=9(x+y)

10y+x=10x+y-63

now put x alone and solve for x then y and add the values of x and y and you will get your answer