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Simplifying -8x + -142 = 78 + 3x Reorder the terms: -142 + -8x = 78 + 3x Solving -142 + -8x = 78 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. -142 + -8x + -3x = 78 + 3x + -3x Combine like terms: -8x + -3x = -11x -142 + -11x = 78 + 3x + -3x Combine like terms: 3x + -3x = 0 -142 + -11x = 78 + 0 -142 + -11x = 78 Add '142' to each side of the equation. -142 + 142 + -11x = 78 + 142 Combine like terms: -142 + 142 = 0 0 + -11x = 78 + 142 -11x = 78 + 142 Combine like terms: 78 + 142 = 220 -11x = 220 Divide each side by '-11'. x = -20 Simplifying x = -20
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