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Simplifying 18 + -2n = 2(1 + n) 18 + -2n = (1 * 2 + n * 2) 18 + -2n = (2 + 2n) Solving 18 + -2n = 2 + 2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2n' to each side of the equation. 18 + -2n + -2n = 2 + 2n + -2n Combine like terms: -2n + -2n = -4n 18 + -4n = 2 + 2n + -2n Combine like terms: 2n + -2n = 0 18 + -4n = 2 + 0 18 + -4n = 2 Add '-18' to each side of the equation. 18 + -18 + -4n = 2 + -18 Combine like terms: 18 + -18 = 0 0 + -4n = 2 + -18 -4n = 2 + -18 Combine like terms: 2 + -18 = -16 -4n = -16 Divide each side by '-4'. n = 4 Simplifying n = 4
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