(x / x+1) - (4/5)
i know i have to have a common denominator, so do i just multiply (4/5) by (x+1)? thanks for the help!
2006-08-18 18:40:00 · 8 answers · asked by A L E X!!! 2 in Education & Reference ➔ Homework Help
x/(x+1)-(4/5)=[5x-4(x+1)]/5
=(x-1)/5
2006-08-18 20:10:10 · answer #1 · answered by raj 7 · 0⤊ 0⤋
chengyman2009 is the one with the right answer!!!
x/x+1 - 4/5
make the denominator common:
x(5)/x+1(5) - 4(x+1)/5(x+1)
5x/5x+5 - 4x+4/5x+5
now that the denominator is common (ie. 5x+5), you can start to combine the 2 fractions to form 1 fraction and simplify.
5x-4x+4/5x+5 = x+4/5x+5
this is the final answer.
always remember to make a common denominator when adding or subtracting fractions.
for multplying and dividing by fractions, common denominators are not necessary.
hope this helps!!
2006-08-19 05:45:59 · answer #2 · answered by Kish 3 · 0⤊ 0⤋
yes, when you get the common denominator it will come out like this:
5x/5x+5 -(4x+4)/5x+5
or
5x-(4x+4)/5x+5 =
x-4/5x+5
2006-08-19 01:52:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
(x / x+1) - (4/5) <---(Cross multiply)
_____________________
4x + 4 - 5x = 0 <--- add the 5x to the 4x
_____________________
9x + 4 = 0 <------ subtract the 4 to the other side
_____________________
9x = -4 <----- 9 on both sides
_____________________
x = -4/9
I think that's how you would do it!!!!!!!!!!!!!!!!!
2006-08-19 01:56:05 · answer #4 · answered by ♥Lis♥ 2 · 1⤊ 0⤋
You're doing homework on a Friday? You must really be dedicated.
2006-08-19 01:45:32 · answer #5 · answered by sweetpea 4 · 0⤊ 0⤋
Yes, 80%. P.S. "Zenbach" is "Katzenbach":P Kitten Brook, sounds cute:P
2006-08-19 01:48:06 · answer #6 · answered by Anonymous · 0⤊ 0⤋
hmmm
2006-08-19 01:59:35 · answer #7 · answered by cid 3 · 0⤊ 0⤋
probably...
ps- i love germany!!! i have a lot of german in me!!!
2006-08-19 01:45:18 · answer #8 · answered by SlipKnoT MaGGoT 666 4 · 0⤊ 0⤋