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Simplifying -7x + -126 = 144 + 3x Reorder the terms: -126 + -7x = 144 + 3x Solving -126 + -7x = 144 + 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. -126 + -7x + -3x = 144 + 3x + -3x Combine like terms: -7x + -3x = -10x -126 + -10x = 144 + 3x + -3x Combine like terms: 3x + -3x = 0 -126 + -10x = 144 + 0 -126 + -10x = 144 Add '126' to each side of the equation. -126 + 126 + -10x = 144 + 126 Combine like terms: -126 + 126 = 0 0 + -10x = 144 + 126 -10x = 144 + 126 Combine like terms: 144 + 126 = 270 -10x = 270 Divide each side by '-10'. x = -27 Simplifying x = -27
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