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Simplifying 21(2 + -1n) + 12n = 44 (2 * 21 + -1n * 21) + 12n = 44 (42 + -21n) + 12n = 44 Combine like terms: -21n + 12n = -9n 42 + -9n = 44 Solving 42 + -9n = 44 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + -9n = 44 + -42 Combine like terms: 42 + -42 = 0 0 + -9n = 44 + -42 -9n = 44 + -42 Combine like terms: 44 + -42 = 2 -9n = 2 Divide each side by '-9'. n = -0.2222222222 Simplifying n = -0.2222222222
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