can somebody help me with this? (will mark brainiest)

Answer: 17s + 5t
explanation:
5s+ 4t+ 12s+ t
--> 17s + 5t ( basic 2nd addition of integers )
Answer:
17s + 4t
Step-by-step explanation:
5s + 4t + 12s
= 5s + 12s + 4t
= 5s + 12s = 17s
Answer = 17s + 4t
I think you cut out some of the equation, but I worked out what I can see.
Hope this helps :D