Jacob, Kylie, and Manuel each bought a sandwich and drink. The total bill to $21, and each drink cost $2. Of each sandwich cost the same amount, what is the cost of one sandwich?
So each individual bought one drink and one sandwich. The equation to find the cost is 21 = 3x + 6 Subtract 6 from both sides 15 = 3x Divide 3 from both sides x = 5 The price of each sandwich was $dollars.
Think of it, 5 + 5 + 5 = 15 (sandwiches) 15 + 2 + 2 + 2 = 21 (Drinks and the total sandwich amount)
Hope this makes sense, ask if you need more help! :)