Instead of doing your problem for you, I'll do one exactly
like yours that takes exactly the same steps.  The problem 
I will do is:

Let the integers be x and y

So xy = 329

So we set y equal to 8 times x with 9 subtracted 
from it to make it nine less:

y = 8x - 9 

So we have this system of equations:



Substitute (8x-9) for y in the first 















Using the + sign:





Using the - sign:



.  That's not an integer so we 
disregard it.

Substitute x=7 in 

y = 8x - 9
y = 8(7) - 9
y = 56 - 9
y = 47

So the integers are 7 and 47.

Checking: 

7*47 = 329

8 times 7 is 56, and indeed 47 is 9 less than 56.

So it checks.

Now do yours EXACTLY STEP BY STEP like this one.

Edwin