Question

the numerator of a fraction is 4 less than the denominator if 1 is added to both numerator and denominator become 1/2 find the fraction

Answer 1

let numerator be x-4
and denominator x
now,add 1 to both numerator and denominator
it becomes x-4+1/x+1
which implies x-3/x+1=1/2
cross multiply...
2(x-3)=x+1
2x-6=x+1
2x-x=1+6
x=7
therefore the fraction is 7-4+1/7+1
which gives 4/8
which is equal to half......