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solve |5*2 + 6*(-2) - 2*2 + D| / sqrt(5^2 + 6^2 + (-2)^2) = 3 for D over real numbers
solve |5*2 + 6*(-2) - 2*2 + D| / sqrt(5^2 + 6^2 + (-2)^2) = 3 for D over real numbers
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