Question 1087246
Let {{{ x }}} = the floor the woman entered on
From there, she went to:
{{{ x + 6 }}}
then
{{{ x + 6 - 9 = x - 3 }}}
then
{{{ x - 3 - 12 = x - 15 }}}
then
{{{ x - 15 + 8 = x - 7 }}}
then
{{{ x - 7 - 7 = x - 14 }}}
You are told that this is ground level, or {{{ 0 }}}, so
{{{ x - 14 = 0 }}}
{{{ x = 14 }}}
She entered on the 14th floor
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check the math