Question 1158160
Let {{{ x }}} = Jon's brother's age
{{{ x + 8 }}} = Jon's age
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{{{ x + x + 8 = 40 }}}
{{{ 2x = 32 }}}
{{{ x = 16 }}}
and
{{{ x + 8 = 24 }}}
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Jon is 24
His brother is 16