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Simplifying 2r2 + 80 = r2 Reorder the terms: 80 + 2r2 = r2 Solving 80 + 2r2 = r2 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-1r2' to each side of the equation. 80 + 2r2 + -1r2 = r2 + -1r2 Combine like terms: 2r2 + -1r2 = 1r2 80 + 1r2 = r2 + -1r2 Combine like terms: r2 + -1r2 = 0 80 + 1r2 = 0 Add '-80' to each side of the equation. 80 + -80 + 1r2 = 0 + -80 Combine like terms: 80 + -80 = 0 0 + 1r2 = 0 + -80 1r2 = 0 + -80 Combine like terms: 0 + -80 = -80 1r2 = -80 Divide each side by '1'. r2 = -80 Simplifying r2 = -80 Reorder the terms: 80 + r2 = -80 + 80 Combine like terms: -80 + 80 = 0 80 + r2 = 0 The solution to this equation could not be determined.
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