A given fraction has a value of 3/8. find the value of this fraction, such that when 43 is added to both its numerator and denominator, will result to a new fraction of value 4/9..

can anybody check my work... please

do i have to add 3 + 4 / 8 + 4 = 7/12? what will i do with 4/9? thanks

please do me a favor...