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Simplifying x + 77 + x = 0 Reorder the terms: 77 + x + x = 0 Combine like terms: x + x = 2x 77 + 2x = 0 Solving 77 + 2x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-77' to each side of the equation. 77 + -77 + 2x = 0 + -77 Combine like terms: 77 + -77 = 0 0 + 2x = 0 + -77 2x = 0 + -77 Combine like terms: 0 + -77 = -77 2x = -77 Divide each side by '2'. x = -38.5 Simplifying x = -38.5
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