5=4i'-2i，4i'=5+2i...............(1)
10=(i+i')+2i+3(i+i'-i")=6i+4i'-3i"，将(1)代入，5=8i-3i"...........(2)
5=3(i+i'-i")-5i"=3i+3i'-8i"，将(1)代入，5=3i+15/4+6i/4-8i"，5=18i -32i"........(3)
(2)x32 - (3)x3 145=202i，i=0.72A。
