View Full Version : dividing rational numbers

Stargazer54

09-30-2008, 06:51 PM

I am confused by this problem. When I check my answer it doesnt come out correctly. What am I doing wrong?

3.6x +6 = -2 + 2x

3.6x +6 -6 + -2 -6 +2x

3.6x=4 +2x

3.6x-2x=4

1.6x=4

x = 4/1.6

x= .25

Maybe it's a no solution problem??

Loren

09-30-2008, 07:53 PM

3.6x +6 = -2 + 2x

3.6x +6 -6 = -2 -6 +2x

3.6x=4 +2x <<<error here. How did you get +4???

3.6x-2x=4

1.6x=4

Stargazer54

09-30-2008, 08:36 PM

made this mistake:

-2 + 6 instead of -2 - 6 or -2 + -6

Thanks for your help! The answer checked out.

Subhotosh Khan

09-30-2008, 08:44 PM

I am confused by this problem. When I check my answer it doesnt come out correctly. What am I doing wrong?

3.6x +6 = -2 + 2x

3.6x +6 -6 + -2 -6 +2x

3.6x=4 +2x

3.6x-2x=4

1.6x=4

x = 4/1.6

x= .25 <<< Assuming the step before was correct (i.e. assuming 1.6 x = 4 is correct) - this step is wrong - it would have been x = 2.5

Maybe it's a no solution problem??

Powered by vBulletin® Version 4.2.2 Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.