The operational amplifier having the lowest input signal will draw {TAIL ~ sufficient current} from {HEAD ~ V+} to bring the value of line 15 to that potential 
The operational amplifier having the lowest input signal will draw { TAIL ~ sufficient current } from { HEAD ~ V+ } to bring the value of line 15 to that potential
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH