Question 1096729
{{{system(f=j+4,f-2=5(j-2))}}}


{{{j=f-4}}}
-
{{{f-2=5(f-4-2)}}}

{{{f-2=5f-30}}}

{{{-2+30=4f}}}

{{{4f=28}}}

{{{highlight(f=7)}}}, Frank


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