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Simplifying 63 = -3(1 + -3n) 63 = (1 * -3 + -3n * -3) 63 = (-3 + 9n) Solving 63 = -3 + 9n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9n' to each side of the equation. 63 + -9n = -3 + 9n + -9n Combine like terms: 9n + -9n = 0 63 + -9n = -3 + 0 63 + -9n = -3 Add '-63' to each side of the equation. 63 + -63 + -9n = -3 + -63 Combine like terms: 63 + -63 = 0 0 + -9n = -3 + -63 -9n = -3 + -63 Combine like terms: -3 + -63 = -66 -9n = -66 Divide each side by '-9'. n = 7.333333333 Simplifying n = 7.333333333
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