Question 627408
{{{(f+3)/(12)= (7)/(2)}}}


{{{2(f+3) = 12*7}}}


{{{2(f+3) = 84}}}


{{{f+3 = 84/2}}}


{{{f+3 = 42}}}


{{{f = 42-3}}}


{{{f = 39}}}


So the solution is {{{f = 39}}}


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