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Simplifying -7(1 + 3n) + -6n = -115 (1 * -7 + 3n * -7) + -6n = -115 (-7 + -21n) + -6n = -115 Combine like terms: -21n + -6n = -27n -7 + -27n = -115 Solving -7 + -27n = -115 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -27n = -115 + 7 Combine like terms: -7 + 7 = 0 0 + -27n = -115 + 7 -27n = -115 + 7 Combine like terms: -115 + 7 = -108 -27n = -108 Divide each side by '-27'. n = 4 Simplifying n = 4
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