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Simplifying 8d + 7 = -4(-2d + -4) Reorder the terms: 7 + 8d = -4(-2d + -4) Reorder the terms: 7 + 8d = -4(-4 + -2d) 7 + 8d = (-4 * -4 + -2d * -4) 7 + 8d = (16 + 8d) Add '-8d' to each side of the equation. 7 + 8d + -8d = 16 + 8d + -8d Combine like terms: 8d + -8d = 0 7 + 0 = 16 + 8d + -8d 7 = 16 + 8d + -8d Combine like terms: 8d + -8d = 0 7 = 16 + 0 7 = 16 Solving 7 = 16 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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