简算:8⼀7*75%+0.75*6⼀7-3⼀4

2024-11-22 01:42:18
推荐回答(1个)
回答1:

8/7*75%+0.75*6/7-3/4
=8/7×3/4+3/4×6/7-3/4
=3/4×(8/7+6/7-1)
=3/4×1
=3/4