We are given the following expression:
(1/8v3 −1/3v2 - 2v +2) −(94v3 −1v2+1/4v−2/3)
Step 1 remove the parentheses paying attention to the signs
our expression becomes:
1/8v3 - 1/3v2 - 2v + 2 - 94v3 + 1v2 - 1/4v + 2/3
Step 2 combine all like terms to get
1/8v3 - 94v3 - 1/3v2 + 1v2 - 2v - 1/4v + 2/3
which becomes
-93 7/8v3 + 2/3v2 - 2 1/4v + 2 2/3