Solve for two equations of "e" set to each other in CALC

I have the equations

e^(.12t) = 5e^(.07t)


I need to find solutions for the equations when set equal to each other

e^(.12t) = 5e^(.07t)

e^(.12t)/ e^(.07t)=5

e^.05t = 5... Take the ln of both sides

.05t = ln5

T= (ln5)/.05

= 20ln5

I hope this helps!