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Simplifying x2 + -1xd + 7x + -7d = 0 Reorder the terms: -7d + -1dx + 7x + x2 = 0 Solving -7d + -1dx + 7x + x2 = 0 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-7x' to each side of the equation. -7d + -1dx + 7x + -7x + x2 = 0 + -7x Combine like terms: 7x + -7x = 0 -7d + -1dx + 0 + x2 = 0 + -7x -7d + -1dx + x2 = 0 + -7x Remove the zero: -7d + -1dx + x2 = -7x Add '-1x2' to each side of the equation. -7d + -1dx + x2 + -1x2 = -7x + -1x2 Combine like terms: x2 + -1x2 = 0 -7d + -1dx + 0 = -7x + -1x2 -7d + -1dx = -7x + -1x2 Reorder the terms: -7d + -1dx + 7x + x2 = -7x + 7x + -1x2 + x2 Combine like terms: -7x + 7x = 0 -7d + -1dx + 7x + x2 = 0 + -1x2 + x2 -7d + -1dx + 7x + x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 -7d + -1dx + 7x + x2 = 0 The solution to this equation could not be determined.
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