Question 673457
{{{ (9/14)*(7/9) }}}
Numbers on the bottom can be moved around
when multiplying, as long as they stay on the bottom,
so you can rewrite it this way:
{{{ (9/9)*(7/14) }}}
Note that {{{ 9/9 = 1 }}}, so now you have
{{{ 7/14 }}} 
You can rewrite this as:
{{{ 7/( 7*2 ) }}}
and again as:
{{{ (7/7)*(1/2) }}} and since {{{ 7/7 = 1 }}}
{{{ 1*(1/2) = 1/2 }}}