∵3x+2y=m+1①,2x+y=m-1②
①-②得,x+y=2③
②-③得,x=m-3,∴y=5-m
(1)依题意,有m-3>0,5-m<0,所以m的取值范围是3<m<5
(2)由2mx-9x>2m-9,变换得,(2m-9)x>2m-9
考虑到解集为x
∵3x+2y=m+1①,2x+y=m-1②
①-②得,x+y=2③
②-③得,x=m-3,∴y=5-m
(1)依题意,有m-3>0,5-m<0,所以m的取值范围是3<m<5
(2)由2mx-9x>2m-9,变换得,(2m-9)x>2m-9
考虑到解集为x