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Simplifying r(5) = 2r(5) Reorder the terms for easier multiplication: 5r = 2r(5) Reorder the terms for easier multiplication: 5r = 2 * 5r Multiply 2 * 5 5r = 10r Solving 5r = 10r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-10r' to each side of the equation. 5r + -10r = 10r + -10r Combine like terms: 5r + -10r = -5r -5r = 10r + -10r Combine like terms: 10r + -10r = 0 -5r = 0 Divide each side by '-5'. r = 0 Simplifying r = 0
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