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