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