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Simplifying -6r + 2(r + 2) = -20 Reorder the terms: -6r + 2(2 + r) = -20 -6r + (2 * 2 + r * 2) = -20 -6r + (4 + 2r) = -20 Reorder the terms: 4 + -6r + 2r = -20 Combine like terms: -6r + 2r = -4r 4 + -4r = -20 Solving 4 + -4r = -20 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -4r = -20 + -4 Combine like terms: 4 + -4 = 0 0 + -4r = -20 + -4 -4r = -20 + -4 Combine like terms: -20 + -4 = -24 -4r = -24 Divide each side by '-4'. r = 6 Simplifying r = 6
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