8
|
8
-1.5÷[13 5
×(□+12 3
)]=81 3 2 5
8
-1.5÷[13 5
×(□+12 3
)]+1.5÷[11 3
×(□+12 3
)]=81 3
+1.5÷[12 5
×(□+12 3
)]1 3
1.5÷[1
×(□+12 3
)]+81 3
=82 5 3 5
1.5÷[1
×(□+12 3
)]+81 3
-82 5
=82 5
-83 5 2 5
1.5÷[1
×(□+12 3
)]=1 3 1 5
1.5÷[1
×(□+12 3
)]×[11 3
×(□+12 3
)]=1 3
×[11 5
×(□+12 3
)]1 3
×[11 5
×(□+12 3
)]÷1 3
=1.5÷1 5 1 5
1
×(□+12 3
)=7.51 3
1
×(□+12 3
)÷11 3
=7.5÷12 3 2 3
□+1
=4.51 3
□+1
-11 3
=4.5-11 3 1 3
□=3
.1 6
所以,□中应填3
.1 6