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Simplifying -2(2 + r) = 6 (2 * -2 + r * -2) = 6 (-4 + -2r) = 6 Solving -4 + -2r = 6 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 + -2r = 6 + 4 Combine like terms: -4 + 4 = 0 0 + -2r = 6 + 4 -2r = 6 + 4 Combine like terms: 6 + 4 = 10 -2r = 10 Divide each side by '-2'. r = -5 Simplifying r = -5
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