横着看的:(1)解得.x=2 y=5/8 (2)x=-2/3,y=4/3 (3)x=2,y=-1 (4)x=3,y=1
(5)x=1,y=-1 (6)x=1,y=3 (7) x=44/39,y=9/13 (8)x=41/13,y=-10/13
(9)x=3,y=-1 (10)x=10/17,y=147/87 (11)x=5,y=7 (12)x=2/3,y=1
(13)y=1,x=2 (14)x=-2/3,y=1
花了我半小时才算出来,
横着看的:(1)解得.x=2 y=5/8 (2)x=-2/3,y=4/3 (3)x=2,y=-1 (4)x=3,y=1
(5)x=1,y=-1 (6)x=1,y=3 (7) x=44/39,y=9/13 (8)x=41/13,y=-10/13
(9)x=3,y=-1 (10)x=10/17,y=147/87 (11)x=5,y=7 (12)x=2/3,y=1
(13)y=1,x=2 (14)x=-2/3,y=1
花了我半小时才算出来,