Answer: -8 and -4
This is something you do through trial and error. Making a list or a table like shown below might help.
20: 1,2,4,5,10,20
28: 1,2,4,7,14,28
Answer:
You have 44$, your brother has 11$.
Step-by-step explanation:
Let
be the amount of money your brother has.
Since you have four times the amount of money your brother has, we can call the amount of money you have
.

Thus, you have:

12 pounds divided up between 27 sandwiches is 0.44 pounds for each sandwich. 12/27=0.44