Question 1145242
{{{system(j=w+5,2(j+2)=4(w-1))}}}


Note the question asked: How old is john now?
{{{2j+4=4w-4}}}
{{{2j+8=4w}}}
{{{w=j/2+2}}}


{{{j=j/2+2+5}}}
{{{2j=j+14}}}
{{{highlight(j=14)}}}