1/3 +5/s-4=2
s-4/3(s-4) +5(3)/3(s-4)=2/3(s-4)
s-4+15=2
s-4+15-2=0
s-4+13=0
s=9
Do you mean
(1/3) + 5/(s-4) = 2 ????
if so then multiply everything by 3(s-4)
(s-4) + 15 = 6(s-4)
15 = 5 (s-4)
3 = s-4
s = 9 Yes, I agree all the way.