If 16^{x+7}=2^{6 x+18}, what is x ?

GMAT Quantitative Reasoning Practice Test 1

Question : 95 of 100

Marks: +1, -0

16^{x+7}=2^{6 x+18}

, what is

x ?

Solution:

\;16 x+7=26 x+18=>24(x+7)=26 x+18=>

\;4(x+7)=6 x+18,

and

x=5

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