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Simplifying 42 = 3n + -7 Reorder the terms: 42 = -7 + 3n Solving 42 = -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. 42 + -3n = -7 + 3n + -3n Combine like terms: 3n + -3n = 0 42 + -3n = -7 + 0 42 + -3n = -7 Add '-42' to each side of the equation. 42 + -42 + -3n = -7 + -42 Combine like terms: 42 + -42 = 0 0 + -3n = -7 + -42 -3n = -7 + -42 Combine like terms: -7 + -42 = -49 -3n = -49 Divide each side by '-3'. n = 16.33333333 Simplifying n = 16.33333333
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