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Simplifying 7n + 3 + -2n = 43 Reorder the terms: 3 + 7n + -2n = 43 Combine like terms: 7n + -2n = 5n 3 + 5n = 43 Solving 3 + 5n = 43 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + 5n = 43 + -3 Combine like terms: 3 + -3 = 0 0 + 5n = 43 + -3 5n = 43 + -3 Combine like terms: 43 + -3 = 40 5n = 40 Divide each side by '5'. n = 8 Simplifying n = 8
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