Try another version of this question
Simplify:
`(2/9-7/18)-:(7/6-7/12)`
`(2/9-7/18)-:(7/6-7/12)`
Box 1: Enter your answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers
Enter DNE for Does Not Exist, oo for Infinity
`-2/7`