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Simplifying D(x) = 500 + -1x Multiply D * x xD = 500 + -1x Solving xD = 500 + -1x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'x' to each side of the equation. x + xD = 500 + -1x + x Combine like terms: -1x + x = 0 x + xD = 500 + 0 x + xD = 500 Reorder the terms: -500 + x + xD = 500 + -500 Combine like terms: 500 + -500 = 0 -500 + x + xD = 0 The solution to this equation could not be determined.
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