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Simplifying 1 + -1n = -7 + -3n Solving 1 + -1n = -7 + -3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3n' to each side of the equation. 1 + -1n + 3n = -7 + -3n + 3n Combine like terms: -1n + 3n = 2n 1 + 2n = -7 + -3n + 3n Combine like terms: -3n + 3n = 0 1 + 2n = -7 + 0 1 + 2n = -7 Add '-1' to each side of the equation. 1 + -1 + 2n = -7 + -1 Combine like terms: 1 + -1 = 0 0 + 2n = -7 + -1 2n = -7 + -1 Combine like terms: -7 + -1 = -8 2n = -8 Divide each side by '2'. n = -4 Simplifying n = -4
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