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Simplifying 20r2 + 25ry + -4xr + -5xy = 0 Reorder the terms: -4rx + 25ry + 20r2 + -5xy = 0 Solving -4rx + 25ry + 20r2 + -5xy = 0 Solving for variable 'r'. The solution to this equation could not be determined.
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