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Simplifying (7x + 9)(2 + 7) = 47 Reorder the terms: (9 + 7x)(2 + 7) = 47 Combine like terms: 2 + 7 = 9 (9 + 7x)(9) = 47 Reorder the terms for easier multiplication: 9(9 + 7x) = 47 (9 * 9 + 7x * 9) = 47 (81 + 63x) = 47 Solving 81 + 63x = 47 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-81' to each side of the equation. 81 + -81 + 63x = 47 + -81 Combine like terms: 81 + -81 = 0 0 + 63x = 47 + -81 63x = 47 + -81 Combine like terms: 47 + -81 = -34 63x = -34 Divide each side by '63'. x = -0.5396825397 Simplifying x = -0.5396825397
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