We could convert both mixed numbers to improper fractions with a common denominator or 9, but let's do it the simpler way (or at least easier). 1/9 is less than 2/3, so we borrow 1 from the 13 and get 12 10/9. Then we convert the 2/3 to 6/9 so we have a common denominator. 10/9 - 6/9 is 4/9, and 12 - 11 is 1. So the answer is 1 4/9.
11/12
17/3 minus 15/4 is 1 11/12
1 half minus 11 thirds = -10
3 2/3 minus 11/12 is 2 3/4 or 2.75
1/2 +1/9=___ make denominators equal 9/18+2/18=11/18.
11/3
32/3 - 11/3 = 11/3 - 4/3 = 7/3 = 21/3
9 - 11 - 2 - 2 2/3 + 6 1/3 = -1/3 or minus one third. Expressed as a decimal, this is equal to -0.3 recurring (that is, -0.3333...)
2/3 - 12 = -11 1/3 or minus eleven and one third.
11/12
11/12 minus 2/3 is 1/4.
17 1/3 - 5 2/3 = 11 2/3 or eleven and two thirds.
9/4 minus 4/3 is 11/12.
17/3 minus 15/4 is 1 11/12
1 half minus 11 thirds = -10
2/3(n-11) n=number
3 2/3 minus 11/12 is 2 3/4 or 2.75