18 1/4 - 10 5/6 = 73/4 - 65/6 = 438/24 - 260/24 = 178/24 = 7 5/12
-5/6÷3/4-5/6 x 4/3-20/18-10/9-1 1/9
ten twelfths, twenty twenty-fourths, fifteen eighteenths 10/12 ; 20/24 ; 15/18
3 fourths
1/2
3 and 10/12 - 2 and 9/12 = 1 and 1/12
9/12 + 10/12 = 19/12 or 1 and 7/12
That's the same as 7/4 x 6/5 = 42/20 or 21/10 or 2 and 1/10
-5/6 divided by 3/4 is 20 over 18 which simplifies to 1 and 1 over 9
26/24 or 1 1/2
3/4-5/6=9/12-10/12=-1/12
-5.041666...
There are 108 sixths in 18. (There are six sixths in 1, so the number in 18 is 18 times as much. 6 x 18 = 108.)