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Simplifying 7n + -3 = 7n + 12 Reorder the terms: -3 + 7n = 7n + 12 Reorder the terms: -3 + 7n = 12 + 7n Add '-7n' to each side of the equation. -3 + 7n + -7n = 12 + 7n + -7n Combine like terms: 7n + -7n = 0 -3 + 0 = 12 + 7n + -7n -3 = 12 + 7n + -7n Combine like terms: 7n + -7n = 0 -3 = 12 + 0 -3 = 12 Solving -3 = 12 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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