Anything minus itself is zero.
One whole is nine ninths. Nine ninths minus four ninths equals five ninths.
Two thirds is six ninths; six ninths minus four ninths is two ninths.
23 and seven ninths.
It is: 5/9
The answer is -3.5
67/9 - 53/9 = 14/9 or 1 and 5/9
12 is four ninths of twenty-seven.
Five and four-ninths