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Simplifying 9n + -25 = 2n + 21 Reorder the terms: -25 + 9n = 2n + 21 Reorder the terms: -25 + 9n = 21 + 2n Solving -25 + 9n = 21 + 2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2n' to each side of the equation. -25 + 9n + -2n = 21 + 2n + -2n Combine like terms: 9n + -2n = 7n -25 + 7n = 21 + 2n + -2n Combine like terms: 2n + -2n = 0 -25 + 7n = 21 + 0 -25 + 7n = 21 Add '25' to each side of the equation. -25 + 25 + 7n = 21 + 25 Combine like terms: -25 + 25 = 0 0 + 7n = 21 + 25 7n = 21 + 25 Combine like terms: 21 + 25 = 46 7n = 46 Divide each side by '7'. n = 6.571428571 Simplifying n = 6.571428571
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