Question 1174900
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Archie is 6 years older than Betty. In two years, Archie will be twice as old as Betty.
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{{{system(-x+y=6,y+2=2(x+2))}}}


{{{y=x+6}}}
-
{{{x+6+2=2x+4}}}
{{{8=x+4}}}
{{{highlight(x=4)}}}