Fourteen and four fifths.
Three fifths minus fifteen equals -14 and two fifths.
Converting to twentieths it is fifteen twentieths minus sixteen twentieths, so the result is minus one twentieth.
minus three fifths
Call it 21 fifths minus 13 fifths, ie 8 fifths which is one-and-three-fifths
two fifths
Minus one tenth.
Two-fifths of fifteen is 6.
six and three fifths
One whole minus two fifths is three fifths.
We convert it into thirty-fifths. That gives 15 thirty-fifths minus 14 thirty-fifths which is one thirty fifth.
Two and Two Fifths
4/5 minus 1/5 = 3/5