Question 1128010
j, Jack
c, Lacy


{{{system(j=4c,(j-9)+(c-9)=57)}}}


First step should be {{{4c-9+c-9=57}}}.

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<b>Write</b> your problem exercise more like <b>this</b>:


Jack is 4 times as old as Lacy.  Nine years ago, the sum of their ages was 57.  How old are they now?