题目内容

1949×(
1
43
-
1
1992
)+43×(
1
1949
-
1
1992
)-1992×(
1
1949
+
1
43
)+103.
1949×(
1
43
-
1
1992
)+43×(
1
1949
-
1
1992
)-1992×(
1
1949
+
1
43
)+103,
=1949×
1
43
-1949×
1
1992
+43×
1
1949
-43×
1
1992
-1992×
1
1949
-1992×
1
43
+103,
=
1949
43
-
1949
1992
+
43
1949
-
43
1992
-
1992
1949
-
1992
43
+103,
=103+(
1949
43
-
1992
43
)+(
43
1949
-
1992
1949
)-(
1949
1992
+
43
1992
),
=103-1+(-1)-1,
=100.
练习册系列答案
相关题目

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网