The numerator of a fraction is 8 less than the denominator.when 6 is added to the numerator and 10 is added to the denominator,the value of the fraction is unchanged.find the original fraction.
2 answers
If you really want an expert to help you, be sure to follow directions and type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.
d-8/d = d-2/d+10
(d-8)(d+10) = d(d-2)
d^2 + 2d - 80 = d^2 - 2d
4d = 80
d = 20
check:
12/20 = 18/30
(d-8)(d+10) = d(d-2)
d^2 + 2d - 80 = d^2 - 2d
4d = 80
d = 20
check:
12/20 = 18/30
1 answer