So here is what we know:
- Smaller number = x
- Larger number = 3x - 7
- Sum (Total value after addition) of the numbers = 61
Using what we know, our equation is
.
Firstly, combine like terms:

Next, add 7 on both sides:

Next, divide both sides by 4 and the smaller number is

Now to find the larger number, plug 17 into the larger number expression to solve:

In short, the smaller number is 17 and the larger number is 44.