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Simplifying -4 + -2n + 4n = 7 + -4 Combine like terms: -2n + 4n = 2n -4 + 2n = 7 + -4 Combine like terms: 7 + -4 = 3 -4 + 2n = 3 Solving -4 + 2n = 3 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + 2n = 3 + 4 Combine like terms: -4 + 4 = 0 0 + 2n = 3 + 4 2n = 3 + 4 Combine like terms: 3 + 4 = 7 2n = 7 Divide each side by '2'. n = 3.5 Simplifying n = 3.5
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