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Simplifying -9d(-6d) + -1(-13) = -8 Remove parenthesis around (-6d) -9d * -6d + -1(-13) = -8 Reorder the terms for easier multiplication: -9 * -6d * d + -1(-13) = -8 Multiply -9 * -6 54d * d + -1(-13) = -8 Multiply d * d 54d2 + -1(-13) = -8 Multiply -1 * -13 54d2 + 13 = -8 Reorder the terms: 13 + 54d2 = -8 Solving 13 + 54d2 = -8 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 54d2 = -8 + -13 Combine like terms: 13 + -13 = 0 0 + 54d2 = -8 + -13 54d2 = -8 + -13 Combine like terms: -8 + -13 = -21 54d2 = -21 Divide each side by '54'. d2 = -0.3888888889 Simplifying d2 = -0.3888888889 Reorder the terms: 0.3888888889 + d2 = -0.3888888889 + 0.3888888889 Combine like terms: -0.3888888889 + 0.3888888889 = 0.0000000000 0.3888888889 + d2 = 0.0000000000 The solution to this equation could not be determined.
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