问题
解答题
2
|
答案
2
-35
+(5
)3×5
+(15
)7 9
-(21 2
)1 4 1 2
=2
-35
+55
×5
+(5
)16 9
-(1 2
)9 4 1 2
=-
+25+5
-4 3 3 2
=-
+25-5
=241 6
-5 6
．5
搜题请搜索小程序“爱下问搜题”
2
|
2
-35
+(5
)3×5
+(15
)7 9
-(21 2
)1 4 1 2
=2
-35
+55
×5
+(5
)16 9
-(1 2
)9 4 1 2
=-
+25+5
-4 3 3 2
=-
+25-5
=241 6
-5 6
．5