Question 706222
{{{ log(2,9) + log(2,a)  = log(2,11) }}}
The general rule is:
{{{ log(a,b) + log(a,c) = log(a, b*c) }}}, so
{{{ log(2, 9a) = log(2,11) }}}
Another general rule is:
If {{{ log(a,b) = log(a,c) }}}, then
{{{ b=c }}}, so
{{{ 9a = 11 }}}
{{{ a = 11/9 }}}