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Simplifying 2(r + 4) + 12 = 22 Reorder the terms: 2(4 + r) + 12 = 22 (4 * 2 + r * 2) + 12 = 22 (8 + 2r) + 12 = 22 Reorder the terms: 8 + 12 + 2r = 22 Combine like terms: 8 + 12 = 20 20 + 2r = 22 Solving 20 + 2r = 22 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 2r = 22 + -20 Combine like terms: 20 + -20 = 0 0 + 2r = 22 + -20 2r = 22 + -20 Combine like terms: 22 + -20 = 2 2r = 2 Divide each side by '2'. r = 1 Simplifying r = 1
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