Question 275666
these are fun riddles
S=Sam J=John
{{{S=2(J-2)}}}"Sam is twice as old as John was two years ago"
{{{S-J=2}}}"the difference between their ages be 2 years"
{{{J=S-2}}} plug this J into first equation
{{{S=2((S-2)-2)}}}
{{{S=2(S-4)}}}
{{{S=2S-8)}}}
{{{-S=-8)}}}
{{{highlight(S=8)}}}
{{{J=6}}}