What is the perimeter of an equilateral triangle if each side is (x+3)?

What is the value of x? enter your answer in the box.

Can anyone me with this question?

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p.s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)