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Simplifying (X + 7)(x + -4) = -18 Reorder the terms: (7 + X)(x + -4) = -18 Reorder the terms: (7 + X)(-4 + x) = -18 Multiply (7 + X) * (-4 + x) (7(-4 + x) + X(-4 + x)) = -18 ((-4 * 7 + x * 7) + X(-4 + x)) = -18 ((-28 + 7x) + X(-4 + x)) = -18 (-28 + 7x + (-4 * X + x * X)) = -18 (-28 + 7x + (-4X + xX)) = -18 Reorder the terms: (-28 + -4X + 7x + xX) = -18 (-28 + -4X + 7x + xX) = -18 Solving -28 + -4X + 7x + xX = -18 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '28' to each side of the equation. -28 + -4X + 7x + 28 + xX = -18 + 28 Reorder the terms: -28 + 28 + -4X + 7x + xX = -18 + 28 Combine like terms: -28 + 28 = 0 0 + -4X + 7x + xX = -18 + 28 -4X + 7x + xX = -18 + 28 Combine like terms: -18 + 28 = 10 -4X + 7x + xX = 10 Add '-7x' to each side of the equation. -4X + 7x + -7x + xX = 10 + -7x Combine like terms: 7x + -7x = 0 -4X + 0 + xX = 10 + -7x -4X + xX = 10 + -7x Reorder the terms: -10 + -4X + 7x + xX = 10 + -7x + -10 + 7x Reorder the terms: -10 + -4X + 7x + xX = 10 + -10 + -7x + 7x Combine like terms: 10 + -10 = 0 -10 + -4X + 7x + xX = 0 + -7x + 7x -10 + -4X + 7x + xX = -7x + 7x Combine like terms: -7x + 7x = 0 -10 + -4X + 7x + xX = 0 The solution to this equation could not be determined.
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