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Simplifying 71 + 2n = 21 + 2n Add '-2n' to each side of the equation. 71 + 2n + -2n = 21 + 2n + -2n Combine like terms: 2n + -2n = 0 71 + 0 = 21 + 2n + -2n 71 = 21 + 2n + -2n Combine like terms: 2n + -2n = 0 71 = 21 + 0 71 = 21 Solving 71 = 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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