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Simplifying 50 + -1(3n) = (7n) + 80 Remove parenthesis around (3n) 50 + -1 * 3n = (7n) + 80 Multiply -1 * 3 50 + -3n = (7n) + 80 Reorder the terms: 50 + -3n = 80 + (7n) Solving 50 + -3n = 80 + (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. 50 + -3n + (-7n) = 80 + (7n) + (-7n) Combine like terms: -3n + (-7n) = -10n 50 + -10n = 80 + (7n) + (-7n) Combine like terms: (7n) + (-7n) = 0 50 + -10n = 80 + 0 50 + -10n = 80 Add '-50' to each side of the equation. 50 + -50 + -10n = 80 + -50 Combine like terms: 50 + -50 = 0 0 + -10n = 80 + -50 -10n = 80 + -50 Combine like terms: 80 + -50 = 30 -10n = 30 Divide each side by '-10'. n = -3 Simplifying n = -3
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