tolong pakek caranya

[tex] \frac{1}{4} + \frac{1}{6} + \frac{1}{12} = \frac{3 + 2 + 1}{12} = \frac{6}{12} = \frac{12}{6} = 2 \: ohm \\ 5 + 2 + 8 = 15 \: ohm \: (d)[/tex]
Jawabannya yg D.
Makasih jdikn yg trbaik:)

•Rt=5+Rp+8
•1/Rp= 1/4+1/6+1/12
1/Rp=6/12
Rp= 2
•Rt= 5+2+8=15 ohm
jawabny D
maaf kl slah