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Simplifying (9) * 45r + 65 = 0 Multiply 9 * 45 405r + 65 = 0 Reorder the terms: 65 + 405r = 0 Solving 65 + 405r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-65' to each side of the equation. 65 + -65 + 405r = 0 + -65 Combine like terms: 65 + -65 = 0 0 + 405r = 0 + -65 405r = 0 + -65 Combine like terms: 0 + -65 = -65 405r = -65 Divide each side by '405'. r = -0.1604938272 Simplifying r = -0.1604938272
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