计算:76×(123−153)+23×(153+176)−53×(123−176)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/08/06 17:23:58
计算:76×(
−
)+23×(
+
)−53×(
−
)
1 |
23 |
1 |
53 |
1 |
53 |
1 |
76 |
1 |
23 |
1 |
76 |
![计算:76×(123−153)+23×(153+176)−53×(123−176)](/uploads/image/z/8290479-39-9.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A76%C3%97%28123%E2%88%92153%29%2B23%C3%97%28153%2B176%29%E2%88%9253%C3%97%28123%E2%88%92176%29)
76×(
1
23−
1
53)+23×(
1
53+
1
76)−53×(
1
23−
1
76)
=76×
1
23-76×
1
53+23×
1
53+23×
1
76-53×
1
23+53×
1
76
=76×
1
23-53×
1
23-76×
1
53+23×
1
53+23×
1
76+53×
1
76
═1-1+1
=1.
故答案为:1.
1
23−
1
53)+23×(
1
53+
1
76)−53×(
1
23−
1
76)
=76×
1
23-76×
1
53+23×
1
53+23×
1
76-53×
1
23+53×
1
76
=76×
1
23-53×
1
23-76×
1
53+23×
1
53+23×
1
76+53×
1
76
═1-1+1
=1.
故答案为:1.