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Simplifying (4z + 9) * 2 = 64 Reorder the terms: (9 + 4z) * 2 = 64 Reorder the terms for easier multiplication: 2(9 + 4z) = 64 (9 * 2 + 4z * 2) = 64 (18 + 8z) = 64 Solving 18 + 8z = 64 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-18' to each side of the equation. 18 + -18 + 8z = 64 + -18 Combine like terms: 18 + -18 = 0 0 + 8z = 64 + -18 8z = 64 + -18 Combine like terms: 64 + -18 = 46 8z = 46 Divide each side by '8'. z = 5.75 Simplifying z = 5.75
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