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