Question

Хелп ми плиииз...
Пасибоо

Answer 1

r234567=3R/2=3 Ом
r10,11,12=2R*R/3*R=R2/3=4/3 Ом
r10,11,12,8,9=r10,11,12+2R=4/3+4=16/3 Ом
r13,14,15,16.17=3*R*2R/(5R)=12/5 Ом
r19.20.21.=r10,11,12=2R*R/3*R=R2/3=4/3 Ом
R2-17=3*(16/3)*(12/5)/(3+(16/3)+(12/5))=1.067 Ом
Rob=R1+R18+R22+R2-17+r19.20.21=2*3+1.067+4/3=8.4 Ом