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Simplifying 7 + n = 2(1 + n) 7 + n = (1 * 2 + n * 2) 7 + n = (2 + 2n) Solving 7 + n = 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. 7 + n + -2n = 2 + 2n + -2n Combine like terms: n + -2n = -1n 7 + -1n = 2 + 2n + -2n Combine like terms: 2n + -2n = 0 7 + -1n = 2 + 0 7 + -1n = 2 Add '-7' to each side of the equation. 7 + -7 + -1n = 2 + -7 Combine like terms: 7 + -7 = 0 0 + -1n = 2 + -7 -1n = 2 + -7 Combine like terms: 2 + -7 = -5 -1n = -5 Divide each side by '-1'. n = 5 Simplifying n = 5
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