Hi, how do you pass from 2x1+3x2-7x3+7x5 = 7 to [-7,2,3,-7,0,7] also the first equation seems to be wrong given you have 22 = 7. Then you show an equation with variables. I'm not clear what are you looking for: a symbolic evaluator? an equation parser? both?
Maybe if you explain your problem domain a little bit more people will be able to help you better
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