There are nine parts of the whole to form ninths. Therefore: 9 x 8 = 72 (72/9 seventy-two over nine).
32
Two thirds minus two ninths is 4 ninths. Two thirds is 6 ninths. 6 ninths minus 2 ninths is 4 ninths.
30 :)
(4/9) x 72 = 4 x 8 = 32
There are nine parts of the whole to form ninths. Therefore: 9 x 8 = 72 (72/9 seventy-two over nine).
5/9 x 72 = 40
32
Two thirds minus two ninths is 4 ninths. Two thirds is 6 ninths. 6 ninths minus 2 ninths is 4 ninths.
2/9 minus 1/8 is 7/72
30 :)
40/72 + 27/72 = 67/72
99/72 - 64/72 = 35/72
Well, darling, eight-ninths of 81 is simply 72. You just multiply 81 by 8/9 and you've got your answer. So, there you have it, 72 is the magic number.
(4/9) x 72 = 4 x 8 = 32
2.5
61/72 5/8 + 2/9 = 5/8(9/9) + 2/9(8/8) = 45/72 + 16/72 = 61/72