Question

How do i solve for x and express my answer in simplest answer form?
(4/x) - (3/(x+1)) = 7

Answer 1

please vote http://www.signazon.com/contest/grad2014/lkkajqe5/

Answer 2

i will help u

Answer 3

(4/x) - (3/x + 1) = 7
1/x - 1 = 7
1/x = 8
x = 1/8

Answer: 1/8

Answer 4

that is the answer and i solved it please vote

Answer 5

did u vote

Answer 6

@Nick_B

Answer 7

i got x= 1/8 however, the choices are different. I have (-3+/- Square root 37) /7

Answer 8

@katragaddasaichandra

Answer 9

did u vote

Answer 10

First you have to find the common denominator. Did you do that?

Answer 11

Yeah
x(x+1)

Answer 12

right. \[\frac{ 4(x+1) }{ (x)(x+1) } - \frac{ 3x }{ )x)(x+1)} = \frac{ 7(x)(x+1) }{ (x)(x+1) }\]
Now since they are all under the same denominator, you can solve it like this:
\[4(x+1) - 3x = 7(x)(x+1)\]

Answer 13

Another hint, it ain't 1/8

Answer 14

\[4x + 4 -3x = 7x ^{2} +7x\]

Answer 15

Maybe it won't factor nicely, Use the quadratic formula to solve for the irrational roots.