E1=20V; E2=10V; R=10ohm; R1=2ohm; R2=5ohm

here's my try:

I'=1.25A

I''=0.25A

I get stuck when I try to find the current that comes from the current generator (Ig)

and R3 is not given

Does Ig participate on the current through R.

if not then I=I'-I''=

**1A**

Thanks in advance