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Simplifying 11 + -2(d + -1) = -2d + 3 Reorder the terms: 11 + -2(-1 + d) = -2d + 3 11 + (-1 * -2 + d * -2) = -2d + 3 11 + (2 + -2d) = -2d + 3 Combine like terms: 11 + 2 = 13 13 + -2d = -2d + 3 Reorder the terms: 13 + -2d = 3 + -2d Add '2d' to each side of the equation. 13 + -2d + 2d = 3 + -2d + 2d Combine like terms: -2d + 2d = 0 13 + 0 = 3 + -2d + 2d 13 = 3 + -2d + 2d Combine like terms: -2d + 2d = 0 13 = 3 + 0 13 = 3 Solving 13 = 3 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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