15÷16=90,
15×90÷30,
=45,
答:另一个数是45.
故答案为:45.
.
Learning experiences happen to us throughout our lives, and not too long ago, I had______ that I would like to share.
A.it
B.one
C.that
D.this
在北京,下列哪一选项是一年四季都能看到的星座?()
A、天琴座
B、狮子座
C、北冕座
D、小熊座