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Simplifying 12 = 7 + 3n Solving 12 = 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. 12 + -3n = 7 + 3n + -3n Combine like terms: 3n + -3n = 0 12 + -3n = 7 + 0 12 + -3n = 7 Add '-12' to each side of the equation. 12 + -12 + -3n = 7 + -12 Combine like terms: 12 + -12 = 0 0 + -3n = 7 + -12 -3n = 7 + -12 Combine like terms: 7 + -12 = -5 -3n = -5 Divide each side by '-3'. n = 1.666666667 Simplifying n = 1.666666667
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