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Simplifying 9n + 68 = 7n + 2n + -4 Reorder the terms: 68 + 9n = 7n + 2n + -4 Reorder the terms: 68 + 9n = -4 + 7n + 2n Combine like terms: 7n + 2n = 9n 68 + 9n = -4 + 9n Add '-9n' to each side of the equation. 68 + 9n + -9n = -4 + 9n + -9n Combine like terms: 9n + -9n = 0 68 + 0 = -4 + 9n + -9n 68 = -4 + 9n + -9n Combine like terms: 9n + -9n = 0 68 = -4 + 0 68 = -4 Solving 68 = -4 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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