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Simplifying (2x + -1) + 9 = 2(x + 7) Reorder the terms: (-1 + 2x) + 9 = 2(x + 7) Remove parenthesis around (-1 + 2x) -1 + 2x + 9 = 2(x + 7) Reorder the terms: -1 + 9 + 2x = 2(x + 7) Combine like terms: -1 + 9 = 8 8 + 2x = 2(x + 7) Reorder the terms: 8 + 2x = 2(7 + x) 8 + 2x = (7 * 2 + x * 2) 8 + 2x = (14 + 2x) Add '-2x' to each side of the equation. 8 + 2x + -2x = 14 + 2x + -2x Combine like terms: 2x + -2x = 0 8 + 0 = 14 + 2x + -2x 8 = 14 + 2x + -2x Combine like terms: 2x + -2x = 0 8 = 14 + 0 8 = 14 Solving 8 = 14 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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