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Simplifying (X + -3)(x + 7) = 0 Reorder the terms: (-3 + X)(x + 7) = 0 Reorder the terms: (-3 + X)(7 + x) = 0 Multiply (-3 + X) * (7 + x) (-3(7 + x) + X(7 + x)) = 0 ((7 * -3 + x * -3) + X(7 + x)) = 0 ((-21 + -3x) + X(7 + x)) = 0 (-21 + -3x + (7 * X + x * X)) = 0 (-21 + -3x + (7X + xX)) = 0 Reorder the terms: (-21 + 7X + -3x + xX) = 0 (-21 + 7X + -3x + xX) = 0 Solving -21 + 7X + -3x + xX = 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 + 7X + -3x + 21 + xX = 0 + 21 Reorder the terms: -21 + 21 + 7X + -3x + xX = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 7X + -3x + xX = 0 + 21 7X + -3x + xX = 0 + 21 Combine like terms: 0 + 21 = 21 7X + -3x + xX = 21 Add '3x' to each side of the equation. 7X + -3x + 3x + xX = 21 + 3x Combine like terms: -3x + 3x = 0 7X + 0 + xX = 21 + 3x 7X + xX = 21 + 3x Reorder the terms: -21 + 7X + -3x + xX = 21 + 3x + -21 + -3x Reorder the terms: -21 + 7X + -3x + xX = 21 + -21 + 3x + -3x Combine like terms: 21 + -21 = 0 -21 + 7X + -3x + xX = 0 + 3x + -3x -21 + 7X + -3x + xX = 3x + -3x Combine like terms: 3x + -3x = 0 -21 + 7X + -3x + xX = 0 The solution to this equation could not be determined.
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