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4x+3=7x

 Apr 25, 2022
 #1
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0

No way to get the bases equal...so  take the log of both sides and  by a log property we  can write

 

(x + 3) log 4   = x log 7

 

x log 4  +  3 log 4 =  x log 7

 

x ( log 4 - log7)   =  - 3 log 4

 

x = ( -3 log 4)  /(log 4 - log 7)  ≈  7.43

 

 

cool  cool cool 

 Apr 25, 2022

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