Answer: 7 packs of cards
Step-by-step explanation:
the best way to start is by writing down everything we know
p = packs of cards; c = cost
6p + 5 = c
cost (c) = $47
then plug in what you can
6p + 5 = 47
now solve using PEMDAS and properties of equality
6p + 5 = 47
-5 -5 (do the opposite operation to cancel it out)
6p = 42
/6 /6 (make sure you do everything to both sides of the equation)
p = 7
hope this helped!