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Simplifying 4 + 12 = 16 + -20n Combine like terms: 4 + 12 = 16 16 = 16 + -20n Add '-16' to each side of the equation. 16 + -16 = 16 + -16 + -20n Combine like terms: 16 + -16 = 0 0 = 16 + -16 + -20n Combine like terms: 16 + -16 = 0 0 = 0 + -20n 0 = -20n Solving 0 = -20n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '20n' to each side of the equation. 0 + 20n = -20n + 20n Remove the zero: 20n = -20n + 20n Combine like terms: -20n + 20n = 0 20n = 0 Divide each side by '20'. n = 0 Simplifying n = 0
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