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Simplifying x + 20x + 30 = 0 Reorder the terms: 30 + x + 20x = 0 Combine like terms: x + 20x = 21x 30 + 21x = 0 Solving 30 + 21x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 21x = 0 + -30 Combine like terms: 30 + -30 = 0 0 + 21x = 0 + -30 21x = 0 + -30 Combine like terms: 0 + -30 = -30 21x = -30 Divide each side by '21'. x = -1.428571429 Simplifying x = -1.428571429
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