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Simplifying 4x + -5y = xy + -20 Reorder the terms: 4x + -5y = -20 + xy Solving 4x + -5y = -20 + xy Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1xy' to each side of the equation. 4x + -1xy + -5y = -20 + xy + -1xy Combine like terms: xy + -1xy = 0 4x + -1xy + -5y = -20 + 0 4x + -1xy + -5y = -20 Add '5y' to each side of the equation. 4x + -1xy + -5y + 5y = -20 + 5y Combine like terms: -5y + 5y = 0 4x + -1xy + 0 = -20 + 5y 4x + -1xy = -20 + 5y Reorder the terms: 20 + 4x + -1xy + -5y = -20 + 5y + 20 + -5y Reorder the terms: 20 + 4x + -1xy + -5y = -20 + 20 + 5y + -5y Combine like terms: -20 + 20 = 0 20 + 4x + -1xy + -5y = 0 + 5y + -5y 20 + 4x + -1xy + -5y = 5y + -5y Combine like terms: 5y + -5y = 0 20 + 4x + -1xy + -5y = 0 The solution to this equation could not be determined.
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