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Simplifying -1(2n + -1) + 3(n + 2) = 7 Reorder the terms: -1(-1 + 2n) + 3(n + 2) = 7 (-1 * -1 + 2n * -1) + 3(n + 2) = 7 (1 + -2n) + 3(n + 2) = 7 Reorder the terms: 1 + -2n + 3(2 + n) = 7 1 + -2n + (2 * 3 + n * 3) = 7 1 + -2n + (6 + 3n) = 7 Reorder the terms: 1 + 6 + -2n + 3n = 7 Combine like terms: 1 + 6 = 7 7 + -2n + 3n = 7 Combine like terms: -2n + 3n = 1n 7 + 1n = 7 Add '-7' to each side of the equation. 7 + -7 + 1n = 7 + -7 Combine like terms: 7 + -7 = 0 0 + 1n = 7 + -7 1n = 7 + -7 Combine like terms: 7 + -7 = 0 1n = 0 Solving 1n = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Divide each side by '1'. n = 0 Simplifying n = 0
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