Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
\[\frac{ 1 }{ x }=\frac{ 8 }{ 5x }+3\]
OpenStudy (anonymous):
Dunno if this is the most efficient way but i would subtract 8/5x from both sides...
so you got
(1/x)-(8/5x)=3
can you get them with common denominator?
OpenStudy (anonymous):
i got 0=8x^2+15x-5
OpenStudy (anonymous):
Doesnt look right...
common denominator is 5x, you have to multiply top and bottom of first fraction to get the common denominator so
(5/5x)-(8/5x)=3
-3/5x=3
now cross multiply
OpenStudy (anonymous):
where did 5/5x come from
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
you want a common denominator so you can subtract
1/x - 8/5x
common denominator is 5x and to get that in the first fraction you have to multiply top and bottom by 5
5/5x - 8/5x
OpenStudy (anonymous):
got it ! so how would i do -3/5x=3 to get x
OpenStudy (anonymous):
think of 3 as 3/1 and cross multiply
-3/5x=3/1
-3=15x