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Simplifying -5(3r + 2) = -130 Reorder the terms: -5(2 + 3r) = -130 (2 * -5 + 3r * -5) = -130 (-10 + -15r) = -130 Solving -10 + -15r = -130 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -15r = -130 + 10 Combine like terms: -10 + 10 = 0 0 + -15r = -130 + 10 -15r = -130 + 10 Combine like terms: -130 + 10 = -120 -15r = -120 Divide each side by '-15'. r = 8 Simplifying r = 8
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