(1)2791 - 1935 = (2)3742 + 5403 = (3)1928 - 1393 =
(4)6797 + 2124 = (5)2435 + 7049 = (6)8149 - 7885 =
(7)7168 - 1811 = (8)4357 + 4641 = (9)1160 + 2514 =
(10)3803 + 1001 = (11)6131 + 2505 = (12)4624 + 4691 =
(13)2805 + 5157 = (14)1577 - 1547 = (15)8089 - 5036 =