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Simplifying 4(r + 2) + 5r = 26 Reorder the terms: 4(2 + r) + 5r = 26 (2 * 4 + r * 4) + 5r = 26 (8 + 4r) + 5r = 26 Combine like terms: 4r + 5r = 9r 8 + 9r = 26 Solving 8 + 9r = 26 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 + 9r = 26 + -8 Combine like terms: 8 + -8 = 0 0 + 9r = 26 + -8 9r = 26 + -8 Combine like terms: 26 + -8 = 18 9r = 18 Divide each side by '9'. r = 2 Simplifying r = 2
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