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Simplifying 150 = 5(2 + 4n) 150 = (2 * 5 + 4n * 5) 150 = (10 + 20n) Solving 150 = 10 + 20n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-20n' to each side of the equation. 150 + -20n = 10 + 20n + -20n Combine like terms: 20n + -20n = 0 150 + -20n = 10 + 0 150 + -20n = 10 Add '-150' to each side of the equation. 150 + -150 + -20n = 10 + -150 Combine like terms: 150 + -150 = 0 0 + -20n = 10 + -150 -20n = 10 + -150 Combine like terms: 10 + -150 = -140 -20n = -140 Divide each side by '-20'. n = 7 Simplifying n = 7
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