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Simplifying 3x2 + 21 + 18 = 0 Reorder the terms: 21 + 18 + 3x2 = 0 Combine like terms: 21 + 18 = 39 39 + 3x2 = 0 Solving 39 + 3x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-39' to each side of the equation. 39 + -39 + 3x2 = 0 + -39 Combine like terms: 39 + -39 = 0 0 + 3x2 = 0 + -39 3x2 = 0 + -39 Combine like terms: 0 + -39 = -39 3x2 = -39 Divide each side by '3'. x2 = -13 Simplifying x2 = -13 Reorder the terms: 13 + x2 = -13 + 13 Combine like terms: -13 + 13 = 0 13 + x2 = 0 The solution to this equation could not be determined.
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