Enter the key from Problem 8's side challenge
Wrong key. Go back and solve Problem 8 first!
Solve for x in this equation:
3x + 5 = 5
What value of x makes this equation true?
Hint: If 3x + 5 = 5, then 3x must equal what? And if 3 times something equals that, what is the something?
What is the next prime number after 7?
The answer is your key to unlock Problem 10