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Simplifying 2n + 15 = 2n + 20 + -15 Reorder the terms: 15 + 2n = 2n + 20 + -15 Reorder the terms: 15 + 2n = 20 + -15 + 2n Combine like terms: 20 + -15 = 5 15 + 2n = 5 + 2n Add '-2n' to each side of the equation. 15 + 2n + -2n = 5 + 2n + -2n Combine like terms: 2n + -2n = 0 15 + 0 = 5 + 2n + -2n 15 = 5 + 2n + -2n Combine like terms: 2n + -2n = 0 15 = 5 + 0 15 = 5 Solving 15 = 5 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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