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Simplifying (x + -7)(y + -9) = 0 Reorder the terms: (-7 + x)(y + -9) = 0 Reorder the terms: (-7 + x)(-9 + y) = 0 Multiply (-7 + x) * (-9 + y) (-7(-9 + y) + x(-9 + y)) = 0 ((-9 * -7 + y * -7) + x(-9 + y)) = 0 ((63 + -7y) + x(-9 + y)) = 0 (63 + -7y + (-9 * x + y * x)) = 0 (63 + -7y + (-9x + xy)) = 0 Reorder the terms: (63 + -9x + xy + -7y) = 0 (63 + -9x + xy + -7y) = 0 Solving 63 + -9x + xy + -7y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-63' to each side of the equation. 63 + -9x + xy + -63 + -7y = 0 + -63 Reorder the terms: 63 + -63 + -9x + xy + -7y = 0 + -63 Combine like terms: 63 + -63 = 0 0 + -9x + xy + -7y = 0 + -63 -9x + xy + -7y = 0 + -63 Combine like terms: 0 + -63 = -63 -9x + xy + -7y = -63 Add '7y' to each side of the equation. -9x + xy + -7y + 7y = -63 + 7y Combine like terms: -7y + 7y = 0 -9x + xy + 0 = -63 + 7y -9x + xy = -63 + 7y Reorder the terms: 63 + -9x + xy + -7y = -63 + 7y + 63 + -7y Reorder the terms: 63 + -9x + xy + -7y = -63 + 63 + 7y + -7y Combine like terms: -63 + 63 = 0 63 + -9x + xy + -7y = 0 + 7y + -7y 63 + -9x + xy + -7y = 7y + -7y Combine like terms: 7y + -7y = 0 63 + -9x + xy + -7y = 0 The solution to this equation could not be determined.
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