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Simplifying (x + -9)(y + 4) = 0 Reorder the terms: (-9 + x)(y + 4) = 0 Reorder the terms: (-9 + x)(4 + y) = 0 Multiply (-9 + x) * (4 + y) (-9(4 + y) + x(4 + y)) = 0 ((4 * -9 + y * -9) + x(4 + y)) = 0 ((-36 + -9y) + x(4 + y)) = 0 (-36 + -9y + (4 * x + y * x)) = 0 (-36 + -9y + (4x + xy)) = 0 Reorder the terms: (-36 + 4x + xy + -9y) = 0 (-36 + 4x + xy + -9y) = 0 Solving -36 + 4x + xy + -9y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '36' to each side of the equation. -36 + 4x + xy + 36 + -9y = 0 + 36 Reorder the terms: -36 + 36 + 4x + xy + -9y = 0 + 36 Combine like terms: -36 + 36 = 0 0 + 4x + xy + -9y = 0 + 36 4x + xy + -9y = 0 + 36 Combine like terms: 0 + 36 = 36 4x + xy + -9y = 36 Add '9y' to each side of the equation. 4x + xy + -9y + 9y = 36 + 9y Combine like terms: -9y + 9y = 0 4x + xy + 0 = 36 + 9y 4x + xy = 36 + 9y Reorder the terms: -36 + 4x + xy + -9y = 36 + 9y + -36 + -9y Reorder the terms: -36 + 4x + xy + -9y = 36 + -36 + 9y + -9y Combine like terms: 36 + -36 = 0 -36 + 4x + xy + -9y = 0 + 9y + -9y -36 + 4x + xy + -9y = 9y + -9y Combine like terms: 9y + -9y = 0 -36 + 4x + xy + -9y = 0 The solution to this equation could not be determined.
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