SOLUTION: For the following pair, find the LCD. then write each fraction as a pair of fractions with the LCD as their denominator. x/x+7 and x/x-7 I determined the LCD as (x+

Question 526669: For the following pair, find the LCD. then write each fraction as a pair of fractions with the LCD as their denominator.
x/x+7 and x/x-7
I determined the LCD as (x+7)(x-7)
i then multiplied the 1st fraction by (x-7) and arrived at x(x-7)/(x=7)(x-7)
I multiplied the second fraction by (x+7) and arrived with x(x+7)/(x-7)(x+7)
but the text book states that the answer is :
(x+7)(x-7) ; x^2 - 5x / (x+7)(x-5) , x^2 + 7x / (x+7)(x-5)
I can't figure out where the "5" came from ??
Answer by oberobic(2304) (Show Source): You can put this solution on YOUR website!

.
I'd say your book has a typographical error in it.
Look for a page or handout that is entitled "Errata".
RELATED QUESTIONS
Find the LCD of y/4x,x/6y and convert into a rational expression with the LCD as the... (answered by stanbon)

5/12 , 3/20 find the lcd then c onvert each rational expression into an equivelant... (answered by stanbon,edjones)

Find the LCD then convert each rational expression into an equivalent rational expression (answered by checkley77)

If given expressions were used as the denominators of rational expressions, then what... (answered by richwmiller)

find the lcd for given rational expressions, and convert rational expression into an... (answered by stanbon)

i redid this problem a cpl of time and this is what i keep getting can someone help me as (answered by Fombitz)

find the LCD for the following pair of rational expressions: -5a/7a+7b,... (answered by ewatrrr)

Find the LCD for the given rational expressions and convert each rational expression into (answered by nyc_function)