Question 1134884
A fraction is such that whose numerator is a 4 less than the denominator.
d = n+4
 If 1 is subtracted from numerator and 3 is added to the denominator, the fraction becomes 1/5.
{{{((n-1))/((d+3))}}} = {{{1/5}}}
replace d with with n+4
{{{((n-1))/((n+4+3))}}} = {{{1/5}}}
{{{((n-1))/((n+7))}}} = {{{1/5}}}
cross multiply
5(n-1) = n + 7
5n - 5 = n + 7
5n - n = 7 + 5
4n = 12
n = 12/4
n = 3
then
d = 4 + 3
d = 7
Find the original fraction.
{{{3/7}}} 
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:
Check in the statement
"If 1 is subtracted from numerator and 3 is added to the denominator, the fraction becomes 1/5."
(3-1)/(7+3) = 2/10 = 1/5