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Simplifying -3(7n + -8) = -144 Reorder the terms: -3(-8 + 7n) = -144 (-8 * -3 + 7n * -3) = -144 (24 + -21n) = -144 Solving 24 + -21n = -144 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + -21n = -144 + -24 Combine like terms: 24 + -24 = 0 0 + -21n = -144 + -24 -21n = -144 + -24 Combine like terms: -144 + -24 = -168 -21n = -168 Divide each side by '-21'. n = 8 Simplifying n = 8
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