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Simplifying 1 + n = 7 + 3n Solving 1 + n = 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 + n + -3n = 7 + 3n + -3n Combine like terms: n + -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 = 6 -2n = 6 Divide each side by '-2'. n = -3 Simplifying n = -3
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