[질문] 8가요

74쪽, 1.(1)x=3,y=2,z=7(2)x=3,y=1,z=5,(3)x=2,y=5,z=1,(4)x=2,y=1 2.5 3.-127.8 4.-(1/6) 5.x:y=4:9 6. a=-28,b=-35,c=4 7.x=1,y=6/13,z=3/8 8.3:2:1 9.135/62