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Simplifying 1 + 3x + 21 = 0 Reorder the terms: 1 + 21 + 3x = 0 Combine like terms: 1 + 21 = 22 22 + 3x = 0 Solving 22 + 3x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-22' to each side of the equation. 22 + -22 + 3x = 0 + -22 Combine like terms: 22 + -22 = 0 0 + 3x = 0 + -22 3x = 0 + -22 Combine like terms: 0 + -22 = -22 3x = -22 Divide each side by '3'. x = -7.333333333 Simplifying x = -7.333333333
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