1.5×4⼀5×0.8×6.5×4⼀5的简便运算

1.5×4/5×0.8×6.5×4/5的简便运算
2024-12-15 02:26:08
推荐回答(1个)
回答1:

1.5×4/5×0.8×6.5×4/5
=(3/2)×[(4/5)×(4/5)]×(13/2)×(4/5)
=(3/2)×(13/2)×(4/5)
=3x13x(1/5)
=39/5