计算:(19/97+1919/9797)÷19191919/97979797.
问题描述:
计算:(
+19 97
)÷1919 9797
. 19191919 97979797
答
(
+19 97
)÷1919 9797
19191919 97979797
=
×19 97
+97979797 19191919
×1919 9797
,97979797 19191919
=
+1010101 1010101
,10001 10001
=1+1,
=2.