0.5×(5⼀3+25⼀6)用简便运算

2025-05-04 13:17:57
推荐回答(1个)
回答(1):

=1/2*5/3+1/2*25/6
=5/6+1/2*25/6
=5/6(1+1/2*5)
=5/6(1+5/2)
=5/6*7/2
=35/12