Question

Solve for x. 7^(x-2)=12^(x)

Answer 1

@e.mccormick @mathmale @jim_thompson5910 @saifoo.khan can any of you guys help me ? :(

Answer 2

@GIR__

Answer 3

@shamil98

Answer 4

@Compassionate @anonymous_user @mathmale plzzzz :))

Answer 5

anyone ?

Answer 6

I found this:

7^(x-2)=12^(x)

ln(7^(x-2))=ln(12^(x))

xln(7)-2ln(7)=ln(12^(x))

xln(7)-2ln(7)-xln(12)=0

x(ln(7)-ln(12))=2ln(7)

x=(2ln(7))/(ln(7)-ln(12))

x=3.8918

Answer 7

yes but I plug it back in and it doesn't work :/

Answer 8

if you don't know, no worries :)

Answer 9

http://openstudy.com/study#/updates/4fc2d14ae4b0964abc85c31b

Answer 10

^Did that link help?

Answer 11

a little bit..I plugged it back in it works. But I was looking for an explanation like the one you sent me :) it's fine :)

Answer 12

Sorry I couldn't explain