Analyze the provided image of a mathematical expression.

Note: The provided OCR might contain errors or incomplete information due to the image quality and handwriting. Further analysis would require a clearer image or context to definitively interpret all symbols and their relationships, especially terms like 'N3' and 'D' which are not standard mathematical notation in this context. The equation '4+x-3y = 2y-4+5' and '10(2-4)-4(1-x) = 4' seem to be separate or part of a larger problem that is not fully visible.