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Simplifying 3n + 7 + -2n = 19 Reorder the terms: 7 + 3n + -2n = 19 Combine like terms: 3n + -2n = 1n 7 + 1n = 19 Solving 7 + 1n = 19 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 1n = 19 + -7 Combine like terms: 7 + -7 = 0 0 + 1n = 19 + -7 1n = 19 + -7 Combine like terms: 19 + -7 = 12 1n = 12 Divide each side by '1'. n = 12 Simplifying n = 12
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