5⼀14+5⼀4+9⼀14+1⼀4等于多少?用简便运算。

2025-03-23 06:05:59
推荐回答(3个)
回答1:

5/14+5/4+9/14+1/4

=45/28+9/14+1/4

=9/4+1/4

=5/2

回答2:

5/14+5/4+9/14+1/4
=(5/14+9/14)+(5/4+1/4)
=1+6/4
=10/4
=5/2

回答3:

=5/14+9/14+5/4+1/4
=14/14+6/4
=1+3/2
=5/2
=2.5