90
18
One whole is nine ninths. Nine ninths minus four ninths equals five ninths.
2
one and four ninths as a decimal = 1.4444
9/30
Five-ninths must be added to four-ninths to make a whole.
Four ninths
It is seven ninths.
One is bigger than the other,
Four and two thirds divided by one and three ninths = 7/2 or 31/2
5 and 5/9
.31944