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Solve for x given that ½log29+ log2(5x- 4) = 7

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Solve for x given that ½log29+ log2(5x- 4) = 7 

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0.5log2 9 + log2(5x − 4) = 7
log2 3 + log2(5x − 4) = 7 log2 2
log2 3(5x − 4) = log2 27
15x = 140
 x = 91/3

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