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Simplifying -7 + -1n = -1(3 + 3n) -7 + -1n = (3 * -1 + 3n * -1) -7 + -1n = (-3 + -3n) Solving -7 + -1n = -3 + -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. -7 + -1n + 3n = -3 + -3n + 3n Combine like terms: -1n + 3n = 2n -7 + 2n = -3 + -3n + 3n Combine like terms: -3n + 3n = 0 -7 + 2n = -3 + 0 -7 + 2n = -3 Add '7' to each side of the equation. -7 + 7 + 2n = -3 + 7 Combine like terms: -7 + 7 = 0 0 + 2n = -3 + 7 2n = -3 + 7 Combine like terms: -3 + 7 = 4 2n = 4 Divide each side by '2'. n = 2 Simplifying n = 2
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