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Simplifying 9n + 3 = 7(n + 3) + 2n Reorder the terms: 3 + 9n = 7(n + 3) + 2n Reorder the terms: 3 + 9n = 7(3 + n) + 2n 3 + 9n = (3 * 7 + n * 7) + 2n 3 + 9n = (21 + 7n) + 2n Combine like terms: 7n + 2n = 9n 3 + 9n = 21 + 9n Add '-9n' to each side of the equation. 3 + 9n + -9n = 21 + 9n + -9n Combine like terms: 9n + -9n = 0 3 + 0 = 21 + 9n + -9n 3 = 21 + 9n + -9n Combine like terms: 9n + -9n = 0 3 = 21 + 0 3 = 21 Solving 3 = 21 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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