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Simplifying 5r + 3(3r + -5) = 0 Reorder the terms: 5r + 3(-5 + 3r) = 0 5r + (-5 * 3 + 3r * 3) = 0 5r + (-15 + 9r) = 0 Reorder the terms: -15 + 5r + 9r = 0 Combine like terms: 5r + 9r = 14r -15 + 14r = 0 Solving -15 + 14r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 14r = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 14r = 0 + 15 14r = 0 + 15 Combine like terms: 0 + 15 = 15 14r = 15 Divide each side by '14'. r = 1.071428571 Simplifying r = 1.071428571
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