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