Question 1137207
The difference in their ages never changes
{{{ x + y }}} is Ron's age now
{{{(  x + y ) - x = y }}} ( the difference now )
{{{ ( x + y + 5 ) - ( x + 5 ) = x - x + y + 5 - 5 }}}
{{{ x - x + y + 5 - 5 = y }}} ( the difference in 5 yrs )