Question 720858
She is {{{ y }}} years old
In 14 years she will be {{{ y + 14 }}} years old
14 years ago her age was {{{ y - 14 }}}
{{{ y + 14 = 3*( y - 14 ) }}} 
{{{ y + 14 = 3y - 42 }}}
{{{ 2y = 56 }}}
{{{ y = 28 }}}
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check answer:
In 14 years she will be {{{ y + 14 = 28 + 14 }}} 
{{{ 28 + 14 = 42 }}}
14 years ago, she was {{{ 28 - 14 = 14 }}} 
{{{ 3*14 = 42 }}}
OK