tolongin dong pake cara kerja jugaa, bantuin

PNB=4000T
B=800T
C=375T

JAWAB:
PNB=A+C
4000T=A+375T
A=3625T

PDB=A+B
=3625T+800T
=4425 T

PNB = PDB + PFDN - PFLN
4.000 = PDB + 375 - 800
4.000 = PDB - 425
PDB = 4425

Semoga dapat membantu