Question 1101991
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There are many variations of how this could be simplified.<br>
Since the "C3" is the same in both expressions, I would evaluate it like this:<br>
{{{((9*8*7)/(3*2*1))/((12*11*10)/(3*2*1)) = (9*8*7)/(12*11*10) = (72*7)/(120*11) = (72/120)*(7/11) = (3/5)*(7/11) = 21/55}}}