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Simplifying 2x + 9 = 2(x + -9) Reorder the terms: 9 + 2x = 2(x + -9) Reorder the terms: 9 + 2x = 2(-9 + x) 9 + 2x = (-9 * 2 + x * 2) 9 + 2x = (-18 + 2x) Add '-2x' to each side of the equation. 9 + 2x + -2x = -18 + 2x + -2x Combine like terms: 2x + -2x = 0 9 + 0 = -18 + 2x + -2x 9 = -18 + 2x + -2x Combine like terms: 2x + -2x = 0 9 = -18 + 0 9 = -18 Solving 9 = -18 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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