Question 1042008
Let {{{ x }}} = his present age
{{{ x + 4 = 2*( x - 6 ) }}}
{{{ x + 4 = 2x - 12 }}}
{{{ x = 16 }}}
He his presently 16
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check:
4 years hence: 20
6 yrs ago: 10
{{{ 20 = 2*10 }}}
OK