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Simplifying 5 + 2(n + 1) = 2n + 7 Reorder the terms: 5 + 2(1 + n) = 2n + 7 5 + (1 * 2 + n * 2) = 2n + 7 5 + (2 + 2n) = 2n + 7 Combine like terms: 5 + 2 = 7 7 + 2n = 2n + 7 Reorder the terms: 7 + 2n = 7 + 2n Add '-7' to each side of the equation. 7 + -7 + 2n = 7 + -7 + 2n Combine like terms: 7 + -7 = 0 0 + 2n = 7 + -7 + 2n 2n = 7 + -7 + 2n Combine like terms: 7 + -7 = 0 2n = 0 + 2n 2n = 2n Add '-2n' to each side of the equation. 2n + -2n = 2n + -2n Combine like terms: 2n + -2n = 0 0 = 2n + -2n Combine like terms: 2n + -2n = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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