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Simplifying N + (40 + N) + (3N) = 171 Remove parenthesis around (40 + N) N + 40 + N + (3N) = 171 Reorder the terms: 40 + N + N + (3N) = 171 Combine like terms: N + N = 2N 40 + 2N + (3N) = 171 Combine like terms: 2N + (3N) = 5N 40 + 5N = 171 Solving 40 + 5N = 171 Solving for variable 'N'. Move all terms containing N to the left, all other terms to the right. Add '-40' to each side of the equation. 40 + -40 + 5N = 171 + -40 Combine like terms: 40 + -40 = 0 0 + 5N = 171 + -40 5N = 171 + -40 Combine like terms: 171 + -40 = 131 5N = 131 Divide each side by '5'. N = 26.2 Simplifying N = 26.2
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