Question

the numerator of a fraction is 4 less than the denominator if 1 is added to both it numerator and denominator it became ½ find the fraction

Answer 1

let denominator be x then fraction will be
x-4/x...now adding 1 to both ..x-4+1/x+1=1/2 ...cross multiply ...2(x-3)=x+1...2x-6=x+1...=x=7......so fraction will be 7-4/7=3/7