Algerbra word problem plz help
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Algerbra word problem plz help

[From: ] [author: ] [Date: 12-04-12] [Hit: ]
the resulting fraction is equivalent to 5/7. what was the original fraction?If two fractions are equal, make the cross product !Example if a/b = c/d,Bye !......
(please walk me thru this) in a certain fraction,the denominator is 6 more than the numerator. if 3 is added to both the numerator and the denominator, the resulting fraction is equivalent to 5/7. what was the original fraction?

let n=the numerator
then n+6 denominator

n+3 = 5
--------- -----
n+6+3= 7

-
Hello

If two fractions are equal, make the cross product !

Example if a/b = c/d, then ad = bc

Here 7(n+3) = 5(n+9)
7n + 21 = 5n + 45
7n - 5n = 45 - 21
2n = 24
n = 12

The original fraction was 12/18

If you add 3 you have 15/21 = 5/7

Hope it helps

Bye !
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