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Simplifying 7n + -15 = -7 + 5n Reorder the terms: -15 + 7n = -7 + 5n Solving -15 + 7n = -7 + 5n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-5n' to each side of the equation. -15 + 7n + -5n = -7 + 5n + -5n Combine like terms: 7n + -5n = 2n -15 + 2n = -7 + 5n + -5n Combine like terms: 5n + -5n = 0 -15 + 2n = -7 + 0 -15 + 2n = -7 Add '15' to each side of the equation. -15 + 15 + 2n = -7 + 15 Combine like terms: -15 + 15 = 0 0 + 2n = -7 + 15 2n = -7 + 15 Combine like terms: -7 + 15 = 8 2n = 8 Divide each side by '2'. n = 4 Simplifying n = 4
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