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Simplifying xy + 4 = 0 Reorder the terms: 4 + xy = 0 Solving 4 + xy = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + xy = 0 + -4 Combine like terms: 4 + -4 = 0 0 + xy = 0 + -4 xy = 0 + -4 Combine like terms: 0 + -4 = -4 xy = -4 Divide each side by 'y'. x = -4y-1 Simplifying x = -4y-1
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