Question 526612
solve for t. give exact answer 
ln(t/t-4) = 1
convert to exponential form: base(e) raised to log of number(1)=number(t/(t-4))
e^1=t/(t-4)=e
t=et-4e
et-t=4e
t(e-1)=4e
t=4e/(e-1)