Khan/khan-exercises — Issue #4660: Linear equations 4 - Linear equations 4 - answer is -33/32 but check answer shows answer as being incorrect.
Author: KhanBugz
Created: 2011-10-20 16:47:10+00:00
State: open
Labels: firefox, vista

Reporter: awb_1@hotmail.com

Solve for x:
8=1/−4x−4

Multiply both sides by −4x−4:

8(−4x−4)=1/−4x−4(−4x−4)

−32x−32=1

Now add 32 to both sides:

(−32x−32)+32=1+32

−32x=33

Divide by −32:

x=−33/32

[linear_equations_4.html?seed=117&problem=x-on-bottom](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/linear_equations_4.html?seed=117&problem=x-on-bottom&debug)

["--33/32","--33/32"]

Mozilla/5.0 (Windows NT 6.0; rv:7.0.1) Gecko/20100101 Firefox/7.0.1

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