Sunday 9 July 2017

LOGARITHMS 10


If log3(3x + 18)=4; find x

   Solution

log3(3x + 18)=4

 (3x + 18)=34   
                      
 3x + 18=81


3x = 81 – 18

3x =  63
  
3x =  63   
3        3

x = 21
  
Hence x = 21


TRY THIS...............


If log2(2f - 26)=4; find f

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