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Simplifying 3(-5 + 1) + 2n = 81 Combine like terms: -5 + 1 = -4 3(-4) + 2n = 81 Multiply 3 * -4 -12 + 2n = 81 Solving -12 + 2n = 81 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 2n = 81 + 12 Combine like terms: -12 + 12 = 0 0 + 2n = 81 + 12 2n = 81 + 12 Combine like terms: 81 + 12 = 93 2n = 93 Divide each side by '2'. n = 46.5 Simplifying n = 46.5
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