Equivalent resistance

Find the equivalent resistance of the combination shown in the figure:

http://session.masteringphysics.com/prob…

R5=10. R6=30
What do you think? This is what I have:
R = (1/(10+13+14))^-1 + (1/30)^-1 + 11
R = 78 ohm

10, 13, 14 are in series and add up to 37
Equivalent resistance
= (37 * 30)/(37 + 30) + 11
= 27.5671 ohm.

Rtotal=((1/(10+13+14))+(1/30))^(-1)+11=2… ohms