3/7+4/5= 5/12+5/8= 7/9+6/7= 1-2/7-3/7= 1/4+1/6+3/4= 1/2-1/6=
[主观题]计算。7/8-5/6=2/9+1/2=6/7-2/3=3/10+1/4=3/7+1/9=1/3-1/5=1/6+1/4=5/7-1/5=
[单选题]6,7,5,8,4,9,( )A.5 B.10 C.3 D.4
[单选题]6,7,5,8,4,9,( )A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4
[单选题]6,7,5,8,4,9,( )。A.5B.10C.3D.4