Answer:
add them together
Step-by-step explanation:
X= your age
400-2x=244
-2x=-156
x=78
you are 78 years old
Since Carmen gives two coins to Frankie for every five that she gets, she effectively only gains 3 coins at a time. Therefore, if she has 9 coins, Frankie must have 6.
Assuming the possible digits are from 0-9, there are 10*9*8 possibilities which come out to 720
