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Simplifying -1(-8 + -8k) + 1 = 15 + 8k (-8 * -1 + -8k * -1) + 1 = 15 + 8k (8 + 8k) + 1 = 15 + 8k Reorder the terms: 8 + 1 + 8k = 15 + 8k Combine like terms: 8 + 1 = 9 9 + 8k = 15 + 8k Add '-8k' to each side of the equation. 9 + 8k + -8k = 15 + 8k + -8k Combine like terms: 8k + -8k = 0 9 + 0 = 15 + 8k + -8k 9 = 15 + 8k + -8k Combine like terms: 8k + -8k = 0 9 = 15 + 0 9 = 15 Solving 9 = 15 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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