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Simplifying 7n + -15 = 4n + 6 Reorder the terms: -15 + 7n = 4n + 6 Reorder the terms: -15 + 7n = 6 + 4n Solving -15 + 7n = 6 + 4n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4n' to each side of the equation. -15 + 7n + -4n = 6 + 4n + -4n Combine like terms: 7n + -4n = 3n -15 + 3n = 6 + 4n + -4n Combine like terms: 4n + -4n = 0 -15 + 3n = 6 + 0 -15 + 3n = 6 Add '15' to each side of the equation. -15 + 15 + 3n = 6 + 15 Combine like terms: -15 + 15 = 0 0 + 3n = 6 + 15 3n = 6 + 15 Combine like terms: 6 + 15 = 21 3n = 21 Divide each side by '3'. n = 7 Simplifying n = 7
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