Of the b students at a certain college, x are studying French and y are studying German. If w are studying both French and German, which of the following expresses the number of students at the college not studying either French or German ? Options:  A) b + w- x- y  B) b - w- x- y  C) b- w - x + y  D) w + x + y- z  E) w - x - y - z
{Total} = {French} + {German} - {Both} + {Neither}   b = x + y - w + {Neither}   {Neither} = b + w - x - y.   b + w- x- ynswer: b + w- x- y.
<result>A</result>
Of the b students at a certain college, x are studying French and y are studying German. If w are studying both French and German, which of the following expresses the number of students at the college not studying either French or German ?