19/6 = 57/18
16/9 = 32/18
57 - 32 = 25
25/18 = 1 and 7/18
1/3 = 3/9
3/18 + 8/18 = 11/18
2/3
2/3
2/3 = 6/9 6 - 7 = -1/9
2/3 + 1/6 = 4/6 + 1/6 = 5/6
54
6/9 = 2/3
It is: 5/9+2/3+1/6 = 25/18 or 1 and 7/18
1 1/3 =1 3/9
13 and 23/54
By making the fractions have a common denominator by appropriately multiplying the numerator also. 9 is divisible by 3, so the logical choice of denominator is 9. One multiplies 3 by 3 to get 9, so times the numerator of the third (1) by 3. This gives us five ninths minus three ninths, giving the answer of two ninths 5/9 - 1/3 = 5/9 - 3/9 = 2/9