Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
8000*0.08/(1-(1+0.08)^(-20))*(1-1/(1+0.08)^5)/0.08+x*(1-(1+0.08)^(-4))/(0.08*1.08^4) =8000
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random