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Simplifying 3x + 84 = 0 Reorder the terms: 84 + 3x = 0 Solving 84 + 3x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-84' to each side of the equation. 84 + -84 + 3x = 0 + -84 Combine like terms: 84 + -84 = 0 0 + 3x = 0 + -84 3x = 0 + -84 Combine like terms: 0 + -84 = -84 3x = -84 Divide each side by '3'. x = -28 Simplifying x = -28
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