Question 1123552
Let {{{ x }}} = the original number she has
{{{ x - 6 = (3/4)*x }}}
{{{ x - (3/4)*x = 6 }}}
{{{ (1/4)*x = 6 }}}
Multiply both sides by {{{ 4 }}}
{{{ x = 24 }}}
She had 24 to start with
覧覧覧覧覧覧
Check:
She eats 6, so she then has 18
{{{ 18/24 = 3/4 }}}
She has 3/4 of 
What she started with