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Simplifying 7n + 7 = 7n + 7 Reorder the terms: 7 + 7n = 7n + 7 Reorder the terms: 7 + 7n = 7 + 7n Add '-7' to each side of the equation. 7 + -7 + 7n = 7 + -7 + 7n Combine like terms: 7 + -7 = 0 0 + 7n = 7 + -7 + 7n 7n = 7 + -7 + 7n Combine like terms: 7 + -7 = 0 7n = 0 + 7n 7n = 7n Add '-7n' to each side of the equation. 7n + -7n = 7n + -7n Combine like terms: 7n + -7n = 0 0 = 7n + -7n Combine like terms: 7n + -7n = 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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