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Simplifying (3 + x) * 4 = 20 Reorder the terms for easier multiplication: 4(3 + x) = 20 (3 * 4 + x * 4) = 20 (12 + 4x) = 20 Solving 12 + 4x = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 4x = 20 + -12 Combine like terms: 12 + -12 = 0 0 + 4x = 20 + -12 4x = 20 + -12 Combine like terms: 20 + -12 = 8 4x = 8 Divide each side by '4'. x = 2 Simplifying x = 2
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