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Simplifying -5(r + 6) = -87 Reorder the terms: -5(6 + r) = -87 (6 * -5 + r * -5) = -87 (-30 + -5r) = -87 Solving -30 + -5r = -87 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + -5r = -87 + 30 Combine like terms: -30 + 30 = 0 0 + -5r = -87 + 30 -5r = -87 + 30 Combine like terms: -87 + 30 = -57 -5r = -57 Divide each side by '-5'. r = 11.4 Simplifying r = 11.4
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