The question is probably incomplete. What i am assuming is that the person might ask for the previous ratio or the total number of pens and pencil in the drawer.
So if it is the previous ratio it obviously would be 47 - 5 : 17 -3 so 42 : 14 and in case he or she is asking for the total number of pens and pencils in the drawer before so they were 42 + 14 hence 56.
Answer:
B
Step-by-step explanation:
I've taken a picture of the way I solved it.
Answer:
r-3 hope this helps
Step-by-step explanation:
(2r-3) (r+1) (solve) (I learned the foil method, its hard to explain but there are lots of good Kahn academy videos on how to do)
2r+2r-3r-3
r-3
Answer:
d
Step-by-step explanation: