How would I find for x in here

Please list all steps and explanations for I want to undersand as well.

\({3}^{x+2}={7}^{x-1}\)

\({18}^{x}=4^{2x+1}\)

\(ln(x^2-48)=ln(2x)\)

\(logx +log(x-21)=2\)

\({log}_{4}(x+1)+{log}_{4}5=2\)

\(3ln(2x)=6\)

\(ln(lnx)=0\)

Thank you!

dom6547
Mar 13, 2018