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Simplifying n + 18 = 7(n + -3) Reorder the terms: 18 + n = 7(n + -3) Reorder the terms: 18 + n = 7(-3 + n) 18 + n = (-3 * 7 + n * 7) 18 + n = (-21 + 7n) Solving 18 + n = -21 + 7n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7n' to each side of the equation. 18 + n + -7n = -21 + 7n + -7n Combine like terms: n + -7n = -6n 18 + -6n = -21 + 7n + -7n Combine like terms: 7n + -7n = 0 18 + -6n = -21 + 0 18 + -6n = -21 Add '-18' to each side of the equation. 18 + -18 + -6n = -21 + -18 Combine like terms: 18 + -18 = 0 0 + -6n = -21 + -18 -6n = -21 + -18 Combine like terms: -21 + -18 = -39 -6n = -39 Divide each side by '-6'. n = 6.5 Simplifying n = 6.5
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