81
7/9 * 63 = 7*63/9 = 7*7 = 49
4*5 + 7*9= 20+63=83.
Dividing the numerator and denominator by 9 gives 7/9 or seven ninths.
Seven ninths minus four ninths is 1/3.
seven ninths.
63
28
Seven of them
That depends what there are one and seven ninths of.
Two ninths of twenty-seven is six.
35.