3/9 (three ninths), which can be reduced to 1/3 (one third).
Eight minus one and one ninth equals six and eight ninths.
Five and one ninth.
One third is three ninths. So one ninth minus three ninths is minus two nights.
1 third = 3 ninths, 3 ninths - 2 ninths = 1 ninth.
1/9 (one ninth)
One and 5 ninths is fourteen ninths so double that is twenty eight ninths which ends up as three and one ninth.
One whole is nine ninths. Nine ninths minus four ninths equals five ninths.
4/12 - 2/9 = 1/9 or one ninth.