7/12 is just over one half, while 4/5 is nearly whole, so 4/5 is the greater fraction.
We can check this by converting to percentages:
7/12 = .583
4/5 = .800
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Yes.
the four fifths is better
four fifths.
60% is equal to three fifths, so four fifths is greater
no. because when you convert it both inot tenths fourth fifths = 8/10