1 + 2 (3-1) =?'] ", '1 + 2 (3-1) =?', " ['1 + 2 (3-1) =?', '1 + 2 (3-1) = 1 + 2 (2) = 1 + 2 (2) = 1 + 4 = 5.', '1 + 2 (3-1)-2 =?'] ", '1 + 2 (3-1) =?', " ',' 1 + 2 (3-1) = 1 + 2 (2) = 1 + 2 (2) = 1 + 4 = 5. ',' 1 + 2 (3-1)-2 =? ',' 1 + 2 (3-1)-2 = 1 + 2 (2)-2 = 1 + 2 (2)-2 = 1 + 2 (2)-2 = 1 + 4-2 = 3 '।'1 + 2 (3x4)-5 =?' ", '1 + 2 (3-1) =? \n ']