Answer:
Larissa had 20 friends with her at the fair.
Explanation:
To find the number of friends Larissa had at the fair, we need to set up an equation to represent the given information. Let F be the number of friends Larissa had at the fair. We know that she gave 3 raffle tickets to each of her friends, so the number of raffle tickets she gave to her friends is 3F. She had 67 raffle tickets and gave away 3F tickets, so she had 67-(3F) tickets left over. We also know that she had 7 tickets left over, so we can set up the equation 67-(3F) = 7.
To solve this equation, we need to isolate the variable F. We can do this by adding 3*F to both sides of the equation:
67-(3F) + 3F = 7 + 3F
67 = 7 + 3F
60 = 3*F
Finally, we can divide both sides of the equation by 3 to find the value of F:
60/3 = 3*F/3
20 = F
Thus, Larissa had 20 friends with her at the fair.