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Simplifying n + (n + 1) = 20 + 2n Reorder the terms: n + (1 + n) = 20 + 2n Remove parenthesis around (1 + n) n + 1 + n = 20 + 2n Reorder the terms: 1 + n + n = 20 + 2n Combine like terms: n + n = 2n 1 + 2n = 20 + 2n Add '-2n' to each side of the equation. 1 + 2n + -2n = 20 + 2n + -2n Combine like terms: 2n + -2n = 0 1 + 0 = 20 + 2n + -2n 1 = 20 + 2n + -2n Combine like terms: 2n + -2n = 0 1 = 20 + 0 1 = 20 Solving 1 = 20 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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