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Simplifying n + (2n) + (2n + 7) = 122 Reorder the terms: n + (2n) + (7 + 2n) = 122 Remove parenthesis around (7 + 2n) n + (2n) + 7 + 2n = 122 Reorder the terms: 7 + n + (2n) + 2n = 122 Combine like terms: n + (2n) = 3n 7 + 3n + 2n = 122 Combine like terms: 3n + 2n = 5n 7 + 5n = 122 Solving 7 + 5n = 122 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 5n = 122 + -7 Combine like terms: 7 + -7 = 0 0 + 5n = 122 + -7 5n = 122 + -7 Combine like terms: 122 + -7 = 115 5n = 115 Divide each side by '5'. n = 23 Simplifying n = 23
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