Rобщ=R₁R₂/(R₁+R₂)+R₃R₃/(R₃+R₄)+R₅=2·4/(2+4)+3·5/(3+5)+1≈4,21 Ом
Iобщ=Uобщ/Rобщ=80/4,21≈ 19 А
U₁₋₂=Iобщ·R₁R₂/(R₁+R₂)=19·2·4/(2+4)≈25,333 В
U₃₋₄=Iобщ·R₃R₃/(R₃+R₄)=19·3·5/(3+5)≈35,625 В
U₅=Uобщ - U₁₋₂ - U₃₋₄=80-25,333-35,625=19,042 В
I₁=Iобщ·R₂/(R₁+R₂)=19·4/(2+4)=12,67 А
I₂=Iобщ-I₁=19-12,67=6,33 А
I₃=Iобщ·R₃/(R₃+R₄)=19·5/(3+5)=11,875 А
I₄=Iобщ-I₃=19-11,875=7,125 А