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Simplifying x2 + -2xr + w2 = 0 Reorder the terms: -2rx + w2 + x2 = 0 Solving -2rx + w2 + x2 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1w2' to each side of the equation. -2rx + w2 + -1w2 + x2 = 0 + -1w2 Combine like terms: w2 + -1w2 = 0 -2rx + 0 + x2 = 0 + -1w2 -2rx + x2 = 0 + -1w2 Remove the zero: -2rx + x2 = -1w2 Add '-1x2' to each side of the equation. -2rx + x2 + -1x2 = -1w2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2rx + 0 = -1w2 + -1x2 -2rx = -1w2 + -1x2 Divide each side by '-2x'. r = 0.5w2x-1 + 0.5x Simplifying r = 0.5w2x-1 + 0.5x
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