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Simplifying 2n + 5n + -3 = 7(n + 3) Reorder the terms: -3 + 2n + 5n = 7(n + 3) Combine like terms: 2n + 5n = 7n -3 + 7n = 7(n + 3) Reorder the terms: -3 + 7n = 7(3 + n) -3 + 7n = (3 * 7 + n * 7) -3 + 7n = (21 + 7n) Add '-7n' to each side of the equation. -3 + 7n + -7n = 21 + 7n + -7n Combine like terms: 7n + -7n = 0 -3 + 0 = 21 + 7n + -7n -3 = 21 + 7n + -7n Combine like terms: 7n + -7n = 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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