Respuesta :

3/x+1=5/11 first cross multiply 
3*11=33 and 5*x+1= 5x+5          5x+5=33 
then subtract 5 on both sides 5x+5-5=33-5 
5x=28 so divide 5 on both sides 
5x/5=28/5 
x= 5.6
Hope I Helped