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Simplifying 2(2x + 5) = 420 Reorder the terms: 2(5 + 2x) = 420 (5 * 2 + 2x * 2) = 420 (10 + 4x) = 420 Solving 10 + 4x = 420 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + 4x = 420 + -10 Combine like terms: 10 + -10 = 0 0 + 4x = 420 + -10 4x = 420 + -10 Combine like terms: 420 + -10 = 410 4x = 410 Divide each side by '4'. x = 102.5 Simplifying x = 102.5
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