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Simplifying 9k = -81 + 9k Add '-9k' to each side of the equation. 9k + -9k = -81 + 9k + -9k Combine like terms: 9k + -9k = 0 0 = -81 + 9k + -9k Combine like terms: 9k + -9k = 0 0 = -81 + 0 0 = -81 Solving 0 = -81 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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