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Simplifying -123 + -8x = -8x + 21 Reorder the terms: -123 + -8x = 21 + -8x Add '8x' to each side of the equation. -123 + -8x + 8x = 21 + -8x + 8x Combine like terms: -8x + 8x = 0 -123 + 0 = 21 + -8x + 8x -123 = 21 + -8x + 8x Combine like terms: -8x + 8x = 0 -123 = 21 + 0 -123 = 21 Solving -123 = 21 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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