2^x/(1+2^x) = 1/4 so 8^x/(1+8^x) = ?

• (1+2^x)/2^x=4
  1/2^x+1=4
  2^x=1/3
  (2^3)^x/(1+(2^3)^x)
  (2^x)^3/((2^x)^3+1)
  by substituting 2^x=1/3
  we get 1/28
• 9 years agoHelpfull: Yes(36) No(4)
• 1/28 is answer
  let 2^x=a and proceed
• 8 years agoHelpfull: Yes(4) No(1)
• I think it ll Be 1/2.
• 9 years agoHelpfull: Yes(0) No(10)
• why i am getting answer of this question as 4/7?
  value of 2^x i get is( 1/3)..
  so (4(2^x))/(1+4(2^x))=(4(1/3))/(1+4(1/3)) which results in value saying 4/7.If i m wrong ,kindly correct me.thank you
  
• 8 years agoHelpfull: Yes(0) No(0)