Question 1109454
Reading the problem, I think they 
want the answer in terms of {{{ x }}}
plus a number, as follows:
{{{ x }}} = Bill's age
{{{ x + 5 }}} = sue's age
{{{ x - 3 }}} = Jane's age
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{{{ x + x + 5 + x - 3 = 3x + 2 }}}
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Notice that you can't use {{{ x = 2 }}}
That gives you {{{ x - 3 = -1 }}} 
for Jane's age