Question 1070142
Takes x apples from basket 1; 12-x are left
12-x apples are left and they are taken from basket 2; x are left
12 apples were left, x+(12-x)
check
take 4 from basket 1, and 8 are left.  
8 apples are taken from basket 2, and 4 are left.  The total left=12.