Question

The sum of the digits of a two digit number is 7. When the digits are reversed, the number is decreased by 9. Find the number.

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer: the number is 43 and when it is reversed is 34

Step-by-step explanation:

let the two digits be x and y

the number is 10x +y as tenths and ones place

x+y=7 =>x+y-7=o equation 1

when number is reversed y,x

the number is  10y+x as tenths and ones place

so is decreased by 9

so equation forms 10x+y=10y+x+9

9x-9y-9=0 equation 2

=>solving the equations we get x=4 , y=3

so the number is 43

and when reversed 34