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Simplifying 2x + 7 + 5 = 2(x + 9) Reorder the terms: 7 + 5 + 2x = 2(x + 9) Combine like terms: 7 + 5 = 12 12 + 2x = 2(x + 9) Reorder the terms: 12 + 2x = 2(9 + x) 12 + 2x = (9 * 2 + x * 2) 12 + 2x = (18 + 2x) Add '-2x' to each side of the equation. 12 + 2x + -2x = 18 + 2x + -2x Combine like terms: 2x + -2x = 0 12 + 0 = 18 + 2x + -2x 12 = 18 + 2x + -2x Combine like terms: 2x + -2x = 0 12 = 18 + 0 12 = 18 Solving 12 = 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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