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Simplifying -2k + 7 = -2k + 7 Reorder the terms: 7 + -2k = -2k + 7 Reorder the terms: 7 + -2k = 7 + -2k Add '-7' to each side of the equation. 7 + -7 + -2k = 7 + -7 + -2k Combine like terms: 7 + -7 = 0 0 + -2k = 7 + -7 + -2k -2k = 7 + -7 + -2k Combine like terms: 7 + -7 = 0 -2k = 0 + -2k -2k = -2k Add '2k' to each side of the equation. -2k + 2k = -2k + 2k Combine like terms: -2k + 2k = 0 0 = -2k + 2k Combine like terms: -2k + 2k = 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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