what is the answer of x+5/x=6?

2008-09-09 11:18 am
please. answer n0w...tnx!!!

回答 (10)

2008-09-09 11:27 am
✔ 最佳答案
x + 5/x = 6

x^2 + 5 = 6x ............... x^2 implies square of x

x^2 -6x + 5 = 0

x^2 - 5x -x + 5 = 0

x(x-5) -1 ( x-5) = 0
(x-1) ( x -5 ) = 0

x =1 or x =5
2008-09-09 5:00 pm
This type of question troubles me because I don`t trust it !!!

Some people mean (i) (x + 5) / x = 6
and
Some people mean (ii) x + (5/x) = 6

(i)
x + 5 = 6x
5 = 5x
x = 1

(ii)
x² + 5 = 6x
x² - 6x + 5 = 0
(x - 5)(x - 1) = 0
x = 5 , x = 1

YOU CHOOSE !!
2008-09-09 12:46 pm
(x + 5)/x = 6
x + 5 = 6(x)
x - 6x = -5
-5x = -5
x = -5/-5
x = 1
2008-09-09 11:33 am
x+5/x=6

multiply both sides by x to cancel the fraction.
x+5/x=6
*x x+5/x=6*x
x+5=6x
x-x+5=6x-x
5=5x
x=1
2008-09-09 11:31 am
X=5
5+5/5=6
2008-09-09 11:30 am
x+5x=6? 5=5x so x=1 or 5 if you shut up
2008-09-09 11:29 am
If it is:

x+5/x = 6 then:

(x^2 + 5)/x = 6

x^2 + 5 = 6x

x^2 -6x + 5 = 0

(x-5) (x-1) = 0

Therefore x = 5 or 1


If it is (x+5)/x = 6

Then:
x+5 = 6x

5 = 5x

x = 1



Choose =)
2008-09-09 11:26 am
This is a fraction so equate the numerators and the denominators.
i.e x + 5 = 6 and x = 1

the first equation gives you x = 6 - 5 = 1, which agrees with the second equation. Write???

Therefore x = 1.
2008-09-09 11:23 am
x+5=6x

5 = 6x - x
5 = 5x

x= 1
2008-09-09 11:23 am
Expand the equation: x+5=6x
therefore 5 = 5x
so x = 1


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