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Sum
Solve the following equation:
(x - 5)(x + 3) = (x - 7)(x + 4)
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Solution
(x - 5) (x + 3) = (x - 7)(x + 4)
⇒ x2 + 3x - 5x - 15 = x2 + 4x - 7x - 28
⇒ -2x - 15 = - 3x - 28
⇒ 3x - 2x = 15 - 28
⇒ x = -13
Concept: Simple Linear Equations in One Variable
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