Question 1014074
Let {{{ x }}} = the number of years until
the sum of their ages will be {{{ 169 }}} years
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{{{ ( 14 + x ) + ( 17 + x ) = 169 }}}
{{{ 31 + 2x = 169 }}}
{{{ 2x = 138 }}}
{{{ x = 69 }}}
In 69 years the sum of their ages will be 169 years
check:
{{{ ( 14 + x ) + ( 17 + x ) = 169 }}}
{{{ ( 14 + 69 ) + ( 17 + 69 ) = 169 }}}
{{{ 83 + 86 = 169 }}}
{{{ 169 = 169 }}}
OK