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Simplifying 5n + 7 + -1n = 2(2n + 7) Reorder the terms: 7 + 5n + -1n = 2(2n + 7) Combine like terms: 5n + -1n = 4n 7 + 4n = 2(2n + 7) Reorder the terms: 7 + 4n = 2(7 + 2n) 7 + 4n = (7 * 2 + 2n * 2) 7 + 4n = (14 + 4n) Add '-4n' to each side of the equation. 7 + 4n + -4n = 14 + 4n + -4n Combine like terms: 4n + -4n = 0 7 + 0 = 14 + 4n + -4n 7 = 14 + 4n + -4n Combine like terms: 4n + -4n = 0 7 = 14 + 0 7 = 14 Solving 7 = 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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