Logical thinking with symbols Vol.2 [lvl1+ Ended]

So it has been 5 months since i created the last Puzzle of this kind. I got a lot of positive Feedback that day(s) so i decided to give it another shot :)
Whats to win? 6 HOG of the "Grim Legends" and "Nightmares from the Deep" Series + Left in the Dark.

And since im a nice guy (again) i prepared yet another example for you (see attached picture):

• each symbol represents a number ranging from 0 to 9. But "0" is never represented as a single-digit-number.
• the same symbols are always the same number (in the current Question, but may vary from Question to Question)
• 2 consecutive symbols = 2-digit-number.
• each row must be a valid equation
• each column must be a valid equation
• the answer i’m looking for ist the number which is represented by the red star. In the case of the example „1" would be the correct answer.

Follow me to the Questions!

Here is even a How To?

• every equation ((I marked all 6 of them for you)) describes a restriction to the possible solutions.
• taking in account two or more restrictions let you draw a conclusion about the first number(s).
• with these first number(s) more and more other restrictions and numbers become clear
• the system „collapses“ and you have found every number.
  Or in Short:
• Use logic. They are solveable by just thinking a little about it and ruling combinations out. ;)
• Having knowledge of solving systems of linear equations may help a lot – but is completly optional and just the „mathematical“ approach to solve this shit. Haven’t used them either^^
  

View attached image.