Code:
Dim A
Dim B
Dim C

Private Sub Command1_Click()
A = Text1.Text
C = Text2.Text
B = A / 2
Select Case C
Case Is > B
Text3.Text = (C - B) + 5
Case Is < B
Text3.Text = (C + B) + 5
Case Else
MsgBox ("they must be equal")
End Select
End Sub
text 1 is A, text 2 is C, and text 3 is the result.

bob