@@EEAcademy2022 Sir didn't understand, I1+I2+I3+2=4, 4A is incoming current, can you please explain in two or three lines why did you applied KCL separately for V3.
In your analysis, you should have three node voltages namely V1, V2, V3. You need three simultaneous equations to get the values of 3 variables. That's why we need to apply KCL to the node 3
