I could not edit my initial post anymore, so i hope this makes the rules more clear.
Below you see a circle with arabic numbers, which each represent the number of matches used to make a number made out of matches. So for instance with 6 matches you can make de number 18, 81, but also the number 37, 73, 110, etc. You have to use the format/design of the match-digits and symbols examples, and which and how many digits and symbols you use is up to you, as long as you meet de required number of matches indicated in the circle.
Can you make an valid equation, read clockwise, using the match-numbers and mathematical symbols shown above the circle?