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Simplifying 15n + 45 = 20n Reorder the terms: 45 + 15n = 20n Solving 45 + 15n = 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. 45 + 15n + -20n = 20n + -20n Combine like terms: 15n + -20n = -5n 45 + -5n = 20n + -20n Combine like terms: 20n + -20n = 0 45 + -5n = 0 Add '-45' to each side of the equation. 45 + -45 + -5n = 0 + -45 Combine like terms: 45 + -45 = 0 0 + -5n = 0 + -45 -5n = 0 + -45 Combine like terms: 0 + -45 = -45 -5n = -45 Divide each side by '-5'. n = 9 Simplifying n = 9
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