Question
(64/25)? × (125/512)?-1 =Â
5/8Solution
Let ? = x => (8/5)2x × (5/8)(3x-3) = 5/8 ⇒ (5/8)-2x × (5/8)(3x-3) = 5/8 ⇒ (5/8)(-2x+3x-3) = 5/8 ⇒ (5/8)(x-3) = 5/8 ⇒ x - 3 = 1 ⇒ x = 4Â
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