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Simplifying 20n + -1(8 + -5n) = 40 20n + (8 * -1 + -5n * -1) = 40 20n + (-8 + 5n) = 40 Reorder the terms: -8 + 20n + 5n = 40 Combine like terms: 20n + 5n = 25n -8 + 25n = 40 Solving -8 + 25n = 40 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 25n = 40 + 8 Combine like terms: -8 + 8 = 0 0 + 25n = 40 + 8 25n = 40 + 8 Combine like terms: 40 + 8 = 48 25n = 48 Divide each side by '25'. n = 1.92 Simplifying n = 1.92
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