Answer:
n = 28
Explanation:
Let n - the number
The difference of a number and 9 is the same as 47 less the number.
n - 9 = 47 - n add 9 to both sides
n - 9 + 9 = 47 + 9 - n
n = 56 - n add n to both sides
n + n = 56 - n + n
2n = 56 divide both sides by 2
2n/2 = 56/2
n = 28