解: (x-1)/3-(y+2)/4=0 ①(x-3)/4-(y-3)/3=1/12 ②整理得4x-3y=10 ③3x-4y=-2 ④③*3-④*4得7y=38y=38/7③*4-④*3得7x=46x=46/7解得x=46/7, y=38/7 .