Answer:
35
Explanation:
Let's start by placing 35 in the spot for x. When the tens digit (3) is subtracted from the ones digit (5), the difference is two. Let's see if it works. 5-3=2. So far, we're good! Now one-fifth of 35 is 7, which, is 1 less than the sum of both 5 and 3 which is 8. 8-1=7.