log5(5x)+log 7 7=3^2

• ques : log5(5x)+log7(7)=3^2
  ans:
  log5(5x)+1=9 (loga(a)=1)
  log5(5x)=8
  5x=5^8
  5*5^7=5^8
  so x=5^7
• 10 years agoHelpfull: Yes(2) No(0)
• As u mention here.......
  log5 (5x)+log7 7=3^2
  = here 5 and 7 are base
  so log5 5+log5 x+ log7 7=9
  1+log5 x+1=9
  log5 x=7
  we can write this
  log x/log 5=7
  log x=7*log 5
  x= e^7log5
  
• 10 years agoHelpfull: Yes(0) No(0)