Question 1097114
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the sum of the ages of farhan and his cousin is 38.  seven years ago, farhan was thrice as old as his cousin. find out farhan's present age.
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f, Farhan
c, his cousin

{{{system(f+c=38,f-7=3(c-7))}}}


{{{f-7=3(38-f-7)}}}
{{{simplify}}}{{{this}}}.