Question
Find the value of ‘x’ in the given
expression: (49/16)x × (64/343)x-1 = 4/7Solution
(49/16)^x× (64/343)^(x-1) = 4/7 ⇒(7/4)^2x× (4/7)^(3x-3) = 4/7 〖⇒(4/7)〗^(-2x)× (4/7)^(3x-3) = 4/7 ⇒ -2x+3x-3=1 ⇒ x = 4
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