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Simplifying -6(1 + 7k) + 7(1 + 6k) = -2 (1 * -6 + 7k * -6) + 7(1 + 6k) = -2 (-6 + -42k) + 7(1 + 6k) = -2 -6 + -42k + (1 * 7 + 6k * 7) = -2 -6 + -42k + (7 + 42k) = -2 Reorder the terms: -6 + 7 + -42k + 42k = -2 Combine like terms: -6 + 7 = 1 1 + -42k + 42k = -2 Combine like terms: -42k + 42k = 0 1 + 0 = -2 1 = -2 Solving 1 = -2 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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