explain it step by step please I dont get it

Answer:
$15
Step-by-step explanation:
You want to find the cost of the fish chips (or whatever they are.) Your total is $34. So we can take out the price of the lotion at $6.
34 - 6 = 28
$28 is the total of the two fish chips bags with the coupon you used ($2 off).
To get the price of one fish chips we divide 28 by 2
28 / 2 = $14
Then add your coupon in $2, or $1 for each bag of fish chips.
so each bag of fish chips regularly costs $15