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Simplifying (x + 7)(y + -3) = 0 Reorder the terms: (7 + x)(y + -3) = 0 Reorder the terms: (7 + x)(-3 + y) = 0 Multiply (7 + x) * (-3 + y) (7(-3 + y) + x(-3 + y)) = 0 ((-3 * 7 + y * 7) + x(-3 + y)) = 0 ((-21 + 7y) + x(-3 + y)) = 0 (-21 + 7y + (-3 * x + y * x)) = 0 (-21 + 7y + (-3x + xy)) = 0 Reorder the terms: (-21 + -3x + xy + 7y) = 0 (-21 + -3x + xy + 7y) = 0 Solving -21 + -3x + xy + 7y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + -3x + xy + 21 + 7y = 0 + 21 Reorder the terms: -21 + 21 + -3x + xy + 7y = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -3x + xy + 7y = 0 + 21 -3x + xy + 7y = 0 + 21 Combine like terms: 0 + 21 = 21 -3x + xy + 7y = 21 Add '-7y' to each side of the equation. -3x + xy + 7y + -7y = 21 + -7y Combine like terms: 7y + -7y = 0 -3x + xy + 0 = 21 + -7y -3x + xy = 21 + -7y Reorder the terms: -21 + -3x + xy + 7y = 21 + -7y + -21 + 7y Reorder the terms: -21 + -3x + xy + 7y = 21 + -21 + -7y + 7y Combine like terms: 21 + -21 = 0 -21 + -3x + xy + 7y = 0 + -7y + 7y -21 + -3x + xy + 7y = -7y + 7y Combine like terms: -7y + 7y = 0 -21 + -3x + xy + 7y = 0 The solution to this equation could not be determined.
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