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Simplifying 2(4 + 2r) = 0 (4 * 2 + 2r * 2) = 0 (8 + 4r) = 0 Solving 8 + 4r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 4r = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 4r = 0 + -8 4r = 0 + -8 Combine like terms: 0 + -8 = -8 4r = -8 Divide each side by '4'. r = -2 Simplifying r = -2
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