Find the value of each logarithm given below:

${\log }_{10}10$

Find the value of $x$:

${\log }_{x}216=3$

Find the value of $x$:

${\log }_{4}x=-4$

Find the value of $x$:

${\log }_{3}x=0$

Find the value of $x$:

${\log }_{8}x=2/3$

Find the value of $x$:

${\log }_{10}100=x$

Find the value of $x$:

${\log }_{2}0·5=x$

If ${\log }_{10}x=a$, then ${10}^a=x$.

Express sum or difference as a single logarithm.

$\log 6+\log 5$