Good question, I had to think on that a bit. Four ninths is greater than three sevenths.
3 times four ninths is 12 ninths
1 4/9 (I think I had to do this in my head & I usually work it out on paper.)
4/9 is greater than 3/7
I highly recommend google.
The answer is 2 and three eighths
Four minus two and three-eighths equals one and five-eighths.