I'll work on the first one soon....
Answer:
-10k+12j+15
Step-by-step explanation:
-7k-3+8j+4j-3k+18
-7k-3k+8j+4j-3+18
-10k+12j+15
If you're satisfied with the answer, then please mark me as Brainliest.
There is no answer? So how am I supposed to answer it?