what is the answer to x+1/x=29/10?

2009-12-05 3:29 pm

回答 (10)

2009-12-05 3:38 pm
✔ 最佳答案
x+1/x=29/10 restriction, x can not equal 0

** I am assuming the equation to solve is (x+1)/x, and not x + (1/x) **
Please clarify

cross multiply
(10) * (x+1)=(x) * (29)
expand
10x + 10 = 29x
isolate for x
10 = 19x
x = 10/19
參考: engineer
2009-12-05 3:38 pm
( x + 1 ) / x = 29 / 10
29x = 10 ( x + 1 )
29x = 10x + 10
19x = 10
x = 10/19
2009-12-05 3:38 pm
x+1/x=29/10
29x=10x+10
29x-10x=10
19x=10
x=10/19
2009-12-05 3:38 pm
Multiply through by x and rearrange to give
x^2 - 29x/10 +1 = 0
use the quadratic formula to get x = [2.9 +/- Sqrt(4.41)] / 2
therefore x= 2.5 or x = 0.4

* it seems i've interpreted the question differently to those above. I've read it as x +(1/x) = 29/10
2009-12-05 3:37 pm
Use cross-multiplication..

(x+1)/x = 29/10

10(x+1) = 29x

10x -29x = -10 Move the unknown terms to the left of the equality sign...

-19x = -10

x = 10/19 Answer
2009-12-05 3:37 pm
10(x+1)=29x
10x+10=29x
29x-10x=10
19x=10
x=10/19
2009-12-05 3:39 pm
10 x ² + 10 = 29 x

10 x ² - 29 x + 10 = 0

( 5 x - 2 ) ( 2x - 5 ) = 0

x = 2/5 , x = 5/2
2016-12-18 6:47 pm
29 X 10
2009-12-05 4:34 pm
(x + 1)/x = 29/10
x + 1 = x(29/10)
x + 1 = 29x/10
10(x + 1) = 29x
10x + 10 = 29x
29x - 10x = 10
19x = 10
x = 10/19
2009-12-05 3:45 pm
i donno


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