题目内容
若m+n-p=0,则m(
-
)+n(
-
)-p(
+
)的值等于______.
| 1 |
| n |
| 1 |
| p |
| 1 |
| m |
| 1 |
| p |
| 1 |
| m |
| 1 |
| n |
则m(
-
)+n(
-
)-p(
+
)=
-
+
-
-
-
=
+
-
由题意可得:m-p=-n,m-p=-n,n-p=-m,m+n=p,
∴可得:m(
-
)+n(
-
)-p(
+
)=-1-1-1=-3.
故答案为:-3.
| 1 |
| n |
| 1 |
| p |
| 1 |
| m |
| 1 |
| p |
| 1 |
| m |
| 1 |
| n |
| m |
| n |
| m |
| p |
| n |
| m |
| n |
| p |
| p |
| m |
| p |
| n |
| m-p |
| n |
| n-p |
| m |
| m+n |
| p |
由题意可得:m-p=-n,m-p=-n,n-p=-m,m+n=p,
∴可得:m(
| 1 |
| n |
| 1 |
| p |
| 1 |
| m |
| 1 |
| p |
| 1 |
| m |
| 1 |
| n |
故答案为:-3.
练习册系列答案
相关题目