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Simplifying 13n + -1(-2n) + -6 = 9 Remove parenthesis around (-2n) 13n + -1 * -2n + -6 = 9 Multiply -1 * -2 13n + 2n + -6 = 9 Reorder the terms: -6 + 13n + 2n = 9 Combine like terms: 13n + 2n = 15n -6 + 15n = 9 Solving -6 + 15n = 9 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + 15n = 9 + 6 Combine like terms: -6 + 6 = 0 0 + 15n = 9 + 6 15n = 9 + 6 Combine like terms: 9 + 6 = 15 15n = 15 Divide each side by '15'. n = 1 Simplifying n = 1
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