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Simplifying 20 + -3n = 7n Solving 20 + -3n = 7n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7n' to each side of the equation. 20 + -3n + -7n = 7n + -7n Combine like terms: -3n + -7n = -10n 20 + -10n = 7n + -7n Combine like terms: 7n + -7n = 0 20 + -10n = 0 Add '-20' to each side of the equation. 20 + -20 + -10n = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -10n = 0 + -20 -10n = 0 + -20 Combine like terms: 0 + -20 = -20 -10n = -20 Divide each side by '-10'. n = 2 Simplifying n = 2
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