ext column. 20 Enter the amount, it any, from line 26 in the previous column 21 Add lines 19 and 20 22 Add the amotas on linos 24 and 25 In lho prasIC9S canna 23 Subtract line 22 from line 21. If zero or less, enter -0-. For column (a) only, enter the amount from line 19 24 If line 23 is zero, subtract li