-2/5 + ( X+4 / X ) = 1
2007-11-21 08:41:43 · 6 answers · asked by D*Star 1 in Science & Mathematics ➔ Mathematics
-2/5 + ( X+4 / X ) = 1
-2/5 + ( X+4 / X ) = 5/5
rearrange,
(X+4) / X = 5/5 + 2/5
(X+4) / X = 7/5
X/X + 4/X = 7/5
1 + 4/X = 7/5
4/X = 7/5 - 1
4/X = 2/5
4 = 2X/5
4*5= 2x
20 =2X
X= 20/2 =10
2007-11-21 08:49:19 · answer #1 · answered by 2FastEddie 2 · 0⤊ 0⤋
- 2/5+ x+4/x=1
use x as the lcd
-2/5x+x+4=x
3/5x+4=x
3/5x-3/5+4=x-3/5x
2/5x=4
Multiply both sides by 5/2 * 4/1=
x=10
2007-11-21 17:21:55 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
(x+4)/x=1+2/5
(x+4)/x=7/5
5(x+4)=7x
5x+20=7x
-2x=-20
x=10 - result
2007-11-21 16:47:56 · answer #3 · answered by sweetreddevil 1 · 0⤊ 0⤋
Alexandra is right if the statement is (x+4)/x, but if it's (x + 4/x) then the answer is the square root of 10
2007-11-21 16:51:50 · answer #4 · answered by alizemuffin 3 · 0⤊ 0⤋
multiply x throughout, you have
x^2 - (7/5)x + 4 = 0
solve it using quadratic formula:
x = 0.7 +/- 1.87i
The answer is a complex number.
2007-11-21 17:03:50 · answer #5 · answered by an 4 · 0⤊ 0⤋
ur out of luck there lol..i failed my algebra one class last quarter...but i do wish you luck i know how it feels to not get the answer to a stupid pointless problem that i will never use in my entire life i mean hell...why do they even teach it to us it is pointless garbage lol..did i make you feel better...lol...
2007-11-21 16:47:15 · answer #6 · answered by Jesyka K 2 · 0⤊ 1⤋