A deli has a special one-day event to celebrate its anniversary. On the day of the event, every eighth customer receives a free
drink. Every twenty-eighth customer receives a free sandwich. If 200 customers show up for the event, how many of the customers will receive both a free drink and a free sandwich?
It's a simple linear equation in 'n'. There's only one number that 'n' can be that will make the equation a true statement. That number is called the 'solution' to the equation. Here's one way to find it:
You said that <u> -7n - 4 = 24</u>
Add 4 to each side: -7n = 28
Multiply each side by -1 : 7n = -28
Divide each side by 7 : <em>n = -4</em>
Homework is the only way for most people to learn stuff.
