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Simplifying (x + 3)(X + 4) = 20 Reorder the terms: (3 + x)(X + 4) = 20 Reorder the terms: (3 + x)(4 + X) = 20 Multiply (3 + x) * (4 + X) (3(4 + X) + x(4 + X)) = 20 ((4 * 3 + X * 3) + x(4 + X)) = 20 ((12 + 3X) + x(4 + X)) = 20 (12 + 3X + (4 * x + X * x)) = 20 (12 + 3X + (4x + xX)) = 20 (12 + 3X + 4x + xX) = 20 Solving 12 + 3X + 4x + xX = 20 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + 3X + 4x + -12 + xX = 20 + -12 Reorder the terms: 12 + -12 + 3X + 4x + xX = 20 + -12 Combine like terms: 12 + -12 = 0 0 + 3X + 4x + xX = 20 + -12 3X + 4x + xX = 20 + -12 Combine like terms: 20 + -12 = 8 3X + 4x + xX = 8 Add '-4x' to each side of the equation. 3X + 4x + -4x + xX = 8 + -4x Combine like terms: 4x + -4x = 0 3X + 0 + xX = 8 + -4x 3X + xX = 8 + -4x Reorder the terms: -8 + 3X + 4x + xX = 8 + -4x + -8 + 4x Reorder the terms: -8 + 3X + 4x + xX = 8 + -8 + -4x + 4x Combine like terms: 8 + -8 = 0 -8 + 3X + 4x + xX = 0 + -4x + 4x -8 + 3X + 4x + xX = -4x + 4x Combine like terms: -4x + 4x = 0 -8 + 3X + 4x + xX = 0 The solution to this equation could not be determined.
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