tolong jawab beserta caranya

diket. R1 =4 ohm R2=2 ohm
R3 =4 ohm R4= 2 ohm
R 5=3 ohm R6=5 ohm
dit . R pengganti
jwb :
cari seri dl
Rs1 = R4+R5 =2+3=5 ohm
paralel
1/Rp1 =1/Rs1+1/R6=1/5+1/5=2/5
Rp1=5/2 = 2,5 ohm
ser lg
Rs2 =R3+Rp1=4+2,5 =6,5 ohm
paralel lg
1/Rp2=1/Rs2+1/R2=1/6,5+1/2
=4/126 +13/26
=17/26
Rp2=26/17 = 1,5 ohm
seri lg
Rs3= Rp2+R1 = 1,5 + 4 = 5,5 ohm
jadi hambatan penggantinya 5,5 ohm