anonymous
  • anonymous
if x≠0, then u/x+ 5u/x-u/5x= A. 7x/5u B. 5u/7x C. 29u/5x D. 31u/5x
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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tkhunny
  • tkhunny
It's fractions. Add them? Get the denominators the same and add the numerators.
anonymous
  • anonymous
so is 7 x for the denominators? what about the u? they look too spreadeed out
samanthagreer
  • samanthagreer
i belive it is c

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More answers

anonymous
  • anonymous
why is it c?
anonymous
  • anonymous
how did it became like 29 u if there is only like 9 u
tkhunny
  • tkhunny
Is it this? \(\dfrac{u}{x}+ \dfrac{5u}{x}-\dfrac{u}{5x}\) Find a common denominator. We're just adding fractions.
anonymous
  • anonymous
So if we are just adding it wouldnt be 7u/7x?
anonymous
  • anonymous
Okay everything here is good :)
tkhunny
  • tkhunny
?? \(\dfrac{u}{x} + \dfrac{5u}{x} - \dfrac{u}{5x}\) Common Denominator \(\dfrac{5u}{5x} + \dfrac{25u}{5x} - \dfrac{u}{5x}\) Add \(\dfrac{5u + 25u - u}{5x} = \dfrac{29u}{5x}\) Now, how are you feeling about anything that uses the number 7?
anonymous
  • anonymous
where did the 25 appear from?
carlyleukhardt
  • carlyleukhardt
Its c.
anonymous
  • anonymous
I still dont understand
welshfella
  • welshfella
the lowest common multiple of x,x and 5x is 5x so you can do this by making the denominators in the 3 fractions the same for the first fraction u/x you multiply the u and the x by 5 giving 5u/5x
welshfella
  • welshfella
do you follow that?
lochana
  • lochana
@Kfsv10 have you found a solution?
anonymous
  • anonymous
So it could become in any number?
lochana
  • lochana
yes. It is just solving fractions. for example x(1/3 + 2/3) is same as x/3 + 2x/3. so u/x+ 5u/x-u/5x = u/x(1/1 + 5/1 - 1/5) = u/x(29/5) which is 29u/5x
welshfella
  • welshfella
you need to convert 5u/x to a fraction with 5x as the denominator in the same way as above . The last fraction is u/5x has a denominator of 5x already.

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