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Simplifying 7 + 4(2r + 5) = 3 Reorder the terms: 7 + 4(5 + 2r) = 3 7 + (5 * 4 + 2r * 4) = 3 7 + (20 + 8r) = 3 Combine like terms: 7 + 20 = 27 27 + 8r = 3 Solving 27 + 8r = 3 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-27' to each side of the equation. 27 + -27 + 8r = 3 + -27 Combine like terms: 27 + -27 = 0 0 + 8r = 3 + -27 8r = 3 + -27 Combine like terms: 3 + -27 = -24 8r = -24 Divide each side by '8'. r = -3 Simplifying r = -3
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