There must be some instructions that you haven't told us.
I see a lot more than 7 unknowns for 7 equations. The last purple square with a border hasn't previously been defined unless it is some how related to the other purple squares and the triangle with a border. Some of the differences in the symbols must not be significant.
ohh yeah...uhhh 233 is the answer...but i am somehow convinced that it may be 42 as well...thanks for the alternative approach to solving such equations guys...
Yes, the larger symbol and the smaller symbols are like 10s and 1s. There are more different symbols that equations. There must be a relationship between green dots of different size, triangles of different size, etc.