(1) 66x+17y=3967
25x+y=1200
(2) 18x+23y=2303
74x-y=1998
(3) 44x+90y=7796
44x+y=3476
(4) 76x-66y=4082
30x-y=2940
(5) 67x+54y=8546
71x-y=5680
(6) 42x-95y=-1410
21x-y=1575
(7) 47x-40y=853
34x-y=2006
(8) 19x-32y=-1786
75x+y=4950
(9) 97x+24y=7202
58x-y=2900
(10) 42x+85y=6362
63x-y=1638
(11) 85x-92y=-2518
27x-y=486
(12) 79x+40y=2419
56x-y=1176
(13) 80x-87y=2156
22x-y=880
(14) 32x+62y=5134
57x+y=2850
(15) 83x-49y=82
59x+y=2183