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Simplifying 14n + 21 = 7 + 7n Reorder the terms: 21 + 14n = 7 + 7n Solving 21 + 14n = 7 + 7n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7n' to each side of the equation. 21 + 14n + -7n = 7 + 7n + -7n Combine like terms: 14n + -7n = 7n 21 + 7n = 7 + 7n + -7n Combine like terms: 7n + -7n = 0 21 + 7n = 7 + 0 21 + 7n = 7 Add '-21' to each side of the equation. 21 + -21 + 7n = 7 + -21 Combine like terms: 21 + -21 = 0 0 + 7n = 7 + -21 7n = 7 + -21 Combine like terms: 7 + -21 = -14 7n = -14 Divide each side by '7'. n = -2 Simplifying n = -2
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