问题
解答题
[(+
|
答案
[(+
)-(-1 7
)-(+1 3
)]÷(-1 5
)1 105
=(
+1 7
-1 3
)×(-105)1 5
=
×(-105)+1 7
×(-105)-1 3
×(-105)1 5
=-15-35+21
=-50+21
=-29.
[(+
|
[(+
)-(-1 7
)-(+1 3
)]÷(-1 5
)1 105
=(
+1 7
-1 3
)×(-105)1 5
=
×(-105)+1 7
×(-105)-1 3
×(-105)1 5
=-15-35+21
=-50+21
=-29.