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Simplifying 14n + -21 = 7(2n + 3) Reorder the terms: -21 + 14n = 7(2n + 3) Reorder the terms: -21 + 14n = 7(3 + 2n) -21 + 14n = (3 * 7 + 2n * 7) -21 + 14n = (21 + 14n) Add '-14n' to each side of the equation. -21 + 14n + -14n = 21 + 14n + -14n Combine like terms: 14n + -14n = 0 -21 + 0 = 21 + 14n + -14n -21 = 21 + 14n + -14n Combine like terms: 14n + -14n = 0 -21 = 21 + 0 -21 = 21 Solving -21 = 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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