SOLUTION: Please explain how to solve: {{{ e^(x)-8e^(-x)=7 }}} and solve for x (exact answer) {{{ 10^(10-x)=16^(x) }}} Thank you

 --------- Multiplying by LCD, 





		OR		 (ignore)

 ----- Exponential form

ln 8 = x --- Logarithmic form





 ----------- Exponential form

 ----- Taking log of both sides

10 - x (log 10) = x (log 16)

(10 – x) * 1 = x log 16

10 – x = x log 16

10 = (x log 16) + x

10 = x[(log 16) + 1)]