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Simplifying Xy + -21 = y + -4x Reorder the terms: -21 + yX = y + -4x Reorder the terms: -21 + yX = -4x + y Solving -21 + yX = -4x + y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-1y' to each side of the equation. -21 + -1y + yX = -4x + y + -1y Combine like terms: y + -1y = 0 -21 + -1y + yX = -4x + 0 -21 + -1y + yX = -4x Add '21' to each side of the equation. -21 + -1y + 21 + yX = 21 + -4x Reorder the terms: -21 + 21 + -1y + yX = 21 + -4x Combine like terms: -21 + 21 = 0 0 + -1y + yX = 21 + -4x -1y + yX = 21 + -4x Reorder the terms: -21 + 4x + -1y + yX = 21 + -4x + -21 + 4x Reorder the terms: -21 + 4x + -1y + yX = 21 + -21 + -4x + 4x Combine like terms: 21 + -21 = 0 -21 + 4x + -1y + yX = 0 + -4x + 4x -21 + 4x + -1y + yX = -4x + 4x Combine like terms: -4x + 4x = 0 -21 + 4x + -1y + yX = 0 The solution to this equation could not be determined.
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