问题
解答题
61×
|
答案
61×
-1÷17×47+20÷171 17
=61×
-1×1 17
×47+20×1 17 1 17
=61×
-47×1 17
+20×1 17 1 17
=(61-47+20)×1 17
=34×1 17
=2.
61×
|
61×
-1÷17×47+20÷171 17
=61×
-1×1 17
×47+20×1 17 1 17
=61×
-47×1 17
+20×1 17 1 17
=(61-47+20)×1 17
=34×1 17
=2.