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Simplifying -1 + 4x = x + 8 Reorder the terms: -1 + 4x = 8 + x Solving -1 + 4x = 8 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -1 + 4x + -1x = 8 + x + -1x Combine like terms: 4x + -1x = 3x -1 + 3x = 8 + x + -1x Combine like terms: x + -1x = 0 -1 + 3x = 8 + 0 -1 + 3x = 8 Add '1' to each side of the equation. -1 + 1 + 3x = 8 + 1 Combine like terms: -1 + 1 = 0 0 + 3x = 8 + 1 3x = 8 + 1 Combine like terms: 8 + 1 = 9 3x = 9 Divide each side by '3'. x = 3 Simplifying x = 3

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