I need to solve for k'eq:

-13.8= -2.479 ln k'eq

-11.321= ln k'eq

How do I get the ln out of the way in order to solve for k'eq?

thanks!

-13.8= -2.479 ln k'eq

-13.8/-2.479 = +5.5668 = ln Keq
now hit the ex button to get 261.6 for Keq.