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Simplifying -3(r + 5) = -56 Reorder the terms: -3(5 + r) = -56 (5 * -3 + r * -3) = -56 (-15 + -3r) = -56 Solving -15 + -3r = -56 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 + -3r = -56 + 15 Combine like terms: -15 + 15 = 0 0 + -3r = -56 + 15 -3r = -56 + 15 Combine like terms: -56 + 15 = -41 -3r = -41 Divide each side by '-3'. r = 13.66666667 Simplifying r = 13.66666667
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