Ok. the lost 7 shortstop cards will be -7, and the 5 gained pitcher cards will be a positive 5. So, 5+(-7), or 5-7= -2
4/6
= (4/2) / (6/2) (divide both numerator and denominator by 2)
= 2/3
The final answer is 2/3~
.................F^-1 (x) =x/3-2/3 .................