Find the number which when increased by 17 is equal to 69 times the original number.
Let the number is x Then, x+17=69x 68x = 17 x = 14
A certain two-digit number whose digits when added give a sum of 9. If the digits are reversed, a new number is formed, which when decreased by 9 is equal to 4 times the original number. Find the original number.