Simplify 6/7c - 5/9d - 1/2c 1/3d.

a. 5/9c - 4/12d = 5/9c - 1/3d

b. 5/14c - 2/9d

c. 5/9c + 4/122d = 5/9c + 1/3d

d. 5/14c + 2/9d

The simplified form of 6/7c - 5/9d - 1/2c 1/3d is:

a. 5/9c - 4/12d = 5/9c - 1/3d